The association between language and recognition of facial emotional expressions in elderly individuals. / Associação entre linguagem e o reconhecimento de expressões faciais de emoções em idosos.

PURPOSE: To check the association between a good performance of language and the recognition of facial emotional expressions in elderly individuals. METHODS: Transversal study performed with 118 elderly individuals from the primary care services of health of a city in the state of São Paulo. Sociodemographic data were collected, regarding the performance of language through the domain of Addenbrooke Cognitive Examination - Revised and Recognition of Facial Emotional Expressions. The sample was divided in thirds according to the performance of language: T1 = the best, T2 = average, and T3 = the worst. The groups T1xT3 were compared regarding the performance of recognition of facial expressions of anger, disgust, fear, happiness, sadness, and surprise, and for the intensities of 40%, 60%, 80%, and 100%. The association of independent variables over the performance of language was analyzed through logistic regression. The multivariate model was built from the results of the univariate analyses and has included the continuous variables by emotion and by intensity. Age and schooling associated to the performance of language in the univariate model were included in the multivariate model in order to adjust association analyses. RESULTS: The sample was mainly female (84.7%), with an average age of 70.5 years old, and 3.5 schooling years. The variables associated to the best performance of language in comparative analysis of T1 and T3 were: surprise (OR = 1.485, IC 95% 1.194 - 1.846), and disgust (OR = 1.143, IC 95% 1.005 - 1.300). CONCLUSION: The recognition of facial emotional expressions of surprise and disgust were shown as important factors associated to the good performance of language.

OBJETIVO: Verificar a associação entre o bom desempenho de linguagem e o reconhecimento de expressões faciais de emoções em idosos. MÉTODO: Estudo transversal realizado com 118 idosos dos serviços de atenção primária à saúde de um município paulista. Foram coletados dados sociodemográficos, de desempenho da linguagem pelo domínio do Exame Cognitivo de Addenbrooke - Revisado e de Reconhecimento de Expressões Faciais de Emoções. A amostra foi dividida em tercis de acordo com o desempenho na linguagem: T1 = melhor, T2 = mediano e T3 = pior. Os grupos T1xT3 foram comparados em relação ao desempenho no reconhecimento de expressões faciais de raiva, nojo, medo, alegria, tristeza e surpresa e para as intensidades 40%, 60%, 80% e 100%. A associação das variáveis independentes sobre o desempenho de linguagem foi analisada por meio de regressão logística. O modelo multivariado foi construído a partir dos resultados das análises univariadas e incluiu as variáveis contínuas por emoção e por intensidade. Idade e escolaridade, associadas ao desempenho de linguagem no modelo univariado, foram incluídas no modelo multivariado para ajustar as análises de associação. RESULTADOS: A amostra era predominantemente feminina (84,7%), com idade média de 70,5 anos e 3,5 anos de escolaridade. As variáveis ​​associadas ao melhor desempenho de linguagem na análise comparativa de T1 e T3 foram: surpresa (OR= 1,485, IC 95% 1,194 ­ 1,846) e nojo (OR= 1,143, IC 95% 1,005 ­ 1,300). CONCLUSÃO: O reconhecimento de expressões faciais das emoções surpresa e nojo mostraram-se importantes fatores associados ao bom desempenho da linguagem.

Early Schizophrenia and Bipolar Disorder Patients Display Reduced Neural Prepulse Inhibition.

BACKGROUND: Altered sensorimotor gating has been demonstrated by Prepulse Inhibition (PPI) tests in patients with psychosis. Recent advances in signal processing methods allow assessment of neural PPI through electroencephalogram (EEG) recording during acoustic startle response measures (classic muscular PPI). Simultaneous measurements of muscular (eye-blink) and neural gating phenomena during PPI test may help to better understand sensorial processing dysfunctions in psychosis. In this study, we aimed to assess simultaneously muscular and neural PPI in early bipolar disorder and schizophrenia patients. METHOD: Participants were recruited from a population-based case-control study of first episode psychosis. PPI was measured using electromyography (EMG) and EEG in pulse alone and prepulse + pulse with intervals of 30, 60, and 120 ms in early bipolar disorder (n = 18) and schizophrenia (n = 11) patients. As control group, 15 socio-economically matched healthy subjects were recruited. All subjects were evaluated with Rating Scale, Hamilton Rating Scale for Depression, and Young Mania Rating Scale questionnaires at recruitment and just before PPI test. Wilcoxon ranked sum tests were used to compare PPI test results between groups. RESULTS: In comparison to healthy participants, neural PPI was significantly reduced in PPI 30 and PPI60 among bipolar and schizophrenia patients, while muscular PPI was reduced in PPI60 and PPI120 intervals only among patients with schizophrenia. CONCLUSION: The combination of muscular and neural PPI evaluations suggested distinct impairment patterns among schizophrenia and bipolar disorder patients. Simultaneous recording may contribute with novel information in sensory gating investigations.

Apolipoprotein E ε4 allele impairs cortical activity in healthy aging and Alzheimer's disease.

AIM: To investigate the influence of apolipoprotein E (APOE) genotype on cortical activity, using the event-related potential P300 in healthy older adults and individuals with Alzheimer's disease (AD). METHODS: A cohort of 37 healthy older adults and 48 with AD participated in this study and completed an auditory oddball task using electroencephalographic equipment with 21 channels (10-20 system). APOE genotyping was obtained by real-time PCR. RESULTS: AD presented increased P300 latency and lower P300 amplitude, compared to healthy older adults. AD APOE ε4 carriers presented increased P300 latency in F3 (420.7 ± 65.8 ms), F4 (412.0 ± 49.0 ms), C4 (413.0 ± 41.1 ms) and P3 (420.4 ± 55.7 ms) compared to non-carriers (F3 = 382.5 ± 56.8 ms, p < 0.01; F4 = 372.2 ± 56.7 ms, p < 0.01; C4 = 374.2 ± 51.7 ms, p < 0.01; P3 = 384.4 ± 44.4 ms, p < 0.01). Healthy older adults APOE ε4 carriers presented lower Fz amplitude (2.6 ± 1.5 µV) compared to non-carriers (4.9 ± 2.9 µV; p = 0.02). Linear regression analysis showed that being a carrier of APOE ε4 allele remained significantly associated with P300 latency even after adjusting for sex, age, and cognitive grouping. APOE ε4 allele increases P300 latency (95% CI 0.11-0.98; p = 0.02). CONCLUSION: APOE ε4 allele negatively impacts cortical activity in both healthy older adults and AD individuals.

Associação entre linguagem e o reconhecimento de expressões faciais de emoções em idosos / The association between language and recognition of facial emotional expressions in elderly individuals

RESUMO Objetivo Verificar a associação entre o bom desempenho de linguagem e o reconhecimento de expressões faciais de emoções em idosos. Método Estudo transversal realizado com 118 idosos dos serviços de atenção primária à saúde de um município paulista. Foram coletados dados sociodemográficos, de desempenho da linguagem pelo domínio do Exame Cognitivo de Addenbrooke - Revisado e de Reconhecimento de Expressões Faciais de Emoções. A amostra foi dividida em tercis de acordo com o desempenho na linguagem: T1 = melhor, T2 = mediano e T3 = pior. Os grupos T1xT3 foram comparados em relação ao desempenho no reconhecimento de expressões faciais de raiva, nojo, medo, alegria, tristeza e surpresa e para as intensidades 40%, 60%, 80% e 100%. A associação das variáveis independentes sobre o desempenho de linguagem foi analisada por meio de regressão logística. O modelo multivariado foi construído a partir dos resultados das análises univariadas e incluiu as variáveis contínuas por emoção e por intensidade. Idade e escolaridade, associadas ao desempenho de linguagem no modelo univariado, foram incluídas no modelo multivariado para ajustar as análises de associação. Resultados A amostra era predominantemente feminina (84,7%), com idade média de 70,5 anos e 3,5 anos de escolaridade. As variáveis ​​associadas ao melhor desempenho de linguagem na análise comparativa de T1 e T3 foram: surpresa (OR= 1,485, IC 95% 1,194 - 1,846) e nojo (OR= 1,143, IC 95% 1,005 - 1,300). Conclusão O reconhecimento de expressões faciais das emoções surpresa e nojo mostraram-se importantes fatores associados ao bom desempenho da linguagem.

ABSTRACT Purpose To check the association between a good performance of language and the recognition of facial emotional expressions in elderly individuals. Methods Transversal study performed with 118 elderly individuals from the primary care services of health of a city in the state of São Paulo. Sociodemographic data were collected, regarding the performance of language through the domain of Addenbrooke Cognitive Examination - Revised and Recognition of Facial Emotional Expressions. The sample was divided in thirds according to the performance of language: T1 = the best, T2 = average, and T3 = the worst. The groups T1xT3 were compared regarding the performance of recognition of facial expressions of anger, disgust, fear, happiness, sadness, and surprise, and for the intensities of 40%, 60%, 80%, and 100%. The association of independent variables over the performance of language was analyzed through logistic regression. The multivariate model was built from the results of the univariate analyses and has included the continuous variables by emotion and by intensity. Age and schooling associated to the performance of language in the univariate model were included in the multivariate model in order to adjust association analyses. Results The sample was mainly female (84.7%), with an average age of 70.5 years old, and 3.5 schooling years. The variables associated to the best performance of language in comparative analysis of T1 and T3 were: surprise (OR = 1.485, IC 95% 1.194 - 1.846), and disgust (OR = 1.143, IC 95% 1.005 - 1.300). Conclusion The recognition of facial emotional expressions of surprise and disgust were shown as important factors associated to the good performance of language.

Efficacy of Physical Exercise on Cortical Activity Modulation in Mild Cognitive Impairment: A Systematic Review.

OBJECTIVE: To investigate the effects of physical exercise on cortical activity measured via electroencephalogram (EEG) in individuals with mild cognitive impairment (MCI). DATA SOURCES: PubMed, Web of Science, PsycINFO, and SciELO databases were searched using: "physical exercise," "physical activity," "physical therapy," "exercise," "training," "electroencephalogram," "electroencephalography," "EEG," "mild cognitive impairment," "cognitive dysfunction," and "MCI." The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement was followed and the Physiotherapy Evidence Database scale was used to assess the risk of bias of each study. STUDY SELECTION: Original articles, sample including individuals with MCI, physical exercise intervention, use of EEG to measure cortical activity. DATA EXTRACTION: Sample characteristics, physical exercise protocol characteristics, results related to effects of physical exercise on parameters derived from EEG signals, strengths, limitations, and conclusions of the studies were selected by 2 investigators. DATA SYNTHESIS: A total of 365 articles were identified in electronic databases. After the selection stage, 7 studies were included. Although there was a large spectrum of type of exercise (aerobic, resistance, multimodal, exergames, combined exercise with cognitive training), all exercise protocols altered cortical activity in patients with MCI. An exercise session (acute response) causes power reduction of delta band and increases complexity and P300 amplitude in resting-state EEG. After an intervention with an exercise program (chronic response), there was a reduction in the power of delta and theta bands and an increase in beta and alpha bands, as well an increase in complexity in resting-state EEG. CONCLUSIONS: Physical exercise seems to play a role in cortical activity in patients with MCI, suggesting neural plasticity in such individuals.

Cognition and chronic pain: an analysis on community-dwelling elderly caregivers and non-caregivers.

BACKGROUND: In recent years there has been an increasing number of elderly people who care for another elderly person in the same household. These elderly people are more susceptible to overload and the presence of chronic pain, while pain can negatively influence cognitive variables. OBJECTIVE: To compare the performance and cognitive processing of elderly caregivers and non-caregivers with and without chronic pain. METHODS: This was a cross-sectional study carried out among 149 elderly people divided into four groups that were matched according to sex, age and schooling. The tests used were a numerical pain assessment scale, the Brief Cognitive Screening Battery (BCSB), Addenbrooke's Cognitive Examination (ACER-R) and cognitive processing through event-related potentials (P300). RESULTS: Statistically significant differences between participants with and without chronic pain were found with regard to attention/orientation (p=0.045) and visual-spatial skills (p=0.017), and in the total score (p=0.033). In the pain-free group, the caregivers showed better results than the non-caregivers. There were no effects between subjects or interactions (caregiving and pain factors) either on P300 amplitude or on P300 latency. CONCLUSION: In general, it was observed that pain-free individuals presented better performance. No relationship was observed between the factors care and pain regarding cognitive performance.

Cognition and chronic pain: an analysis on community-dwelling elderly caregivers and non-caregivers / Cognição e dor crônica: uma análise em idosos cuidadores e não cuidadores residentes na comunidade

ABSTRACT Background: In recent years there has been an increasing number of elderly people who care for another elderly person in the same household. These elderly people are more susceptible to overload and the presence of chronic pain, while pain can negatively influence cognitive variables. Objective: To compare the performance and cognitive processing of elderly caregivers and non-caregivers with and without chronic pain. Methods: This was a cross-sectional study carried out among 149 elderly people divided into four groups that were matched according to sex, age and schooling. The tests used were a numerical pain assessment scale, the Brief Cognitive Screening Battery (BCSB), Addenbrooke's Cognitive Examination (ACER-R) and cognitive processing through event-related potentials (P300). Results: Statistically significant differences between participants with and without chronic pain were found with regard to attention/orientation (p=0.045) and visual-spatial skills (p=0.017), and in the total score (p=0.033). In the pain-free group, the caregivers showed better results than the non-caregivers. There were no effects between subjects or interactions (caregiving and pain factors) either on P300 amplitude or on P300 latency. Conclusion: In general, it was observed that pain-free individuals presented better performance. No relationship was observed between the factors care and pain regarding cognitive performance.

RESUMO Introdução: Nos últimos anos, observou-se crescente número de idosos que realizam o cuidado a outro idoso no mesmo domicílio. Esses idosos estão mais susceptíveis à sobrecarga e à presença de dor crônica, sendo que a dor pode influenciar negativamente as variáveis cognitivas. Objetivo: Comparar o desempenho e o processamento cognitivo de cuidadores idosos e não cuidadores com e sem dor crônica. Métodos: Estudo transversal realizado com 149 idosos, divididos em 4 grupos, pareados por sexo, idade e escolaridade. Os testes utilizados foram: escala numérica de avaliação da dor, Bateria Breve de Rastreio Cognitivo (BBRC), Addenbrooke's Cognitive Examination (ACER-R) e processamento cognitivo por meio de Potenciais Relacionados a Eventos (P300). Resultados: Foram encontradas diferenças estatisticamente significantes entre os participantes com e sem dor crônica nos domínios cognitivos atenção/orientação (p=0,045) e habilidades visual-espacial (p=0,017), bem como no escore total do instrumento ACE-R (p=0,033). No grupo sem dor foram encontradas diferenças estatísticas entre cuidadores e não cuidadores, com melhores resultados no grupo cuidador. Não houve efeitos entre os sujeitos ou interações (fatores de Cuidado e Dor) na amplitude do P300 ou na latência do P300. Conclusão: De maneira geral, observou-se que indivíduos sem dor apresentaram melhor desempenho. Não foi observada relação entre os fatores cuidado e dor no desempenho cognitivo.

A Systematic Review of Altered P300 Event-Related Potential in Apolipoprotein E4 (APOE4) Carriers.

BACKGROUND: Apolipoprotein ε4 allele (APOE4) is the strongest genetic risk factor for Alzheimer's disease and seems to be related to cognitive decline and damaged event-related potential P300, which is a sensitive measure to assess cognitive processing. OBJECTIVE: This research aims to critically review the existing scientific evidence regarding the association between APOE4 and P300. METHODS: A systematic review was carried out up to January 2020 on the following databases: Web of Science, Scopus and Medline/PubMed. Articles were considered for inclusion if they are original research that provided information regarding the association between APOE4 and P300, available in English, Spanish, or Portuguese, and available in full text. The methodological quality of the studies selected was evaluated using the quality assessment tool for observational cohort and cross-sectional studies recommended by Cochrane. RESULTS: Out of 993 studies, 14 met the inclusion criteria. The results obtained showed that APOE4 is related to a longer P300 latency. However, the data supplied do not allow us to confirm if this relationship also occurs in amplitude measures. Moreover, it was observed that APOE genotype may influence P300 in different ages, from younger individuals to demented older people. CONCLUSION: Evidence shows that APOE4 negatively influences cortical activities related to cognitive functions, as indicated by P300.

Comparison of cognitive performance and aspects of the care context in elderly caregivers in Brazil: A follow-up study.

Cognitive health is important for the quality of life and well-being of elderly caregivers. Cognitive impairments can negatively affect the ability to care for oneself and others. OBJECTIVE: To compare cognitive performance and aspects of the care context in elderly caregivers of older adults in a three-year follow-up investigation. METHODS: A longitudinal study was conducted of 61 elderly caregivers treated in primary care in a city in the interior of the state of São Paulo with data collected in 2014 and 2017. Sociodemographic characteristics, the care context, cognition, performance for activities of daily living, burden and depressive symptoms were collected in individual interviews. Data analysis was performed to compare categorical and continuous variables. RESULTS: Significant increases were found between baseline and follow-up for the language domain score of the cognitive evaluation (p=0.024), receipt of material support (p=0.020), time providing care (p=0.045) and dependence of elderly care recipient for basic activities of daily living (p=0.042). CONCLUSION: Elderly caregivers performed better on the domain of language, received more material/financial support, spent more time on care and reported greater dependence of the elderly care recipient.

A saúde cognitiva é importante para a qualidade de vida e bem-estar dos cuidadores idosos. O comprometimento cognitivo pode afetar negativamente a capacidade de cuidar de si e dos outros. OBJETIVO: Comparar o desempenho cognitivo e os aspectos do contexto do cuidado em idosos cuidadores de idosos em uma de acompanhamento de três anos. MÉTODOS: Trata-se de um estudo longitudinal com medidas em 2014 e 2017, realizado com 61 cuidadores idosos cadastrados na atenção primária de um município do interior do Estado de São Paulo. Características sociodemográficas, contexto do cuidado, cognição, desempenho nas atividades da vida diária, sobrecarga e sintomas depressivos foram coletados em entrevistas individuais. A análise dos dados foi realizada para comparar variáveis categóricas e contínuas. RESULTADOS: Foram encontrados aumentos significativos entre a linha de base e o acompanhamento do escore no domínio da linguagem da avaliação cognitiva (p=0,024), receber ajuda material (p=0,020), tempo de cuidado (p=0,045) e dependência do idoso em relação às atividades básicas da vida diária (p=0,042). CONCLUSÃO: Os cuidadores de idosos tiveram melhor desempenho no campo da linguagem, passaram a receber mais apoio material / financeiro, experimentaram aumentos no tempo gasto no cuidado e na dependência do idoso.

Meta-Analysis of Sensorimotor Gating Deficits in Patients With Schizophrenia Evaluated by Prepulse Inhibition Test.

Prepulse inhibition (PPI) of startle is an operational measure of sensorimotor gating that is often impaired in patients with schizophrenia. Despite the large number of studies, there is considerable variation in PPI outcomes reported. We conducted a systematic review and meta-analysis investigating PPI impairment in patients with schizophrenia compared with healthy control subjects, and examined possible explanations for the variation in results between studies. Major databases were screened for observational studies comparing healthy subjects and patients with schizophrenia for the prepulse and pulse intervals of 60 and 120 ms as primary outcomes, ie, PPI-60 and PPI-120. Standardized mean difference (SMD) and 95% confidence intervals (CI) were extracted and pooled using random effects models. We then estimated the mean effect size of these measures with random effects meta-analyses and evaluated potential PPI heterogeneity moderators, using sensitivity analysis and meta-regressions. Sixty-seven primary studies were identified, with 3685 healthy and 4290 patients with schizophrenia. The schizophrenia group showed reduction in sensorimotor gating for both PPI-60 (SMD = -0.50, 95% CI = [-0.61, -0.39]) and PPI-120 (SMD = -0.44, 95% CI = [-0.54, -0.33]). The sensitivity and meta-regression analysis showed that sample size, gender proportion, imbalance for gender, source of control group, and study continent were sources of heterogeneity (P < .05) for both PPI-60 and PPI-120 outcomes. Our findings confirm a global sensorimotor gating deficit in schizophrenia patients, with overall moderate effect size for PPI-60 and PPI-120. Methodological consistency should decrease the high level of heterogeneity of PPI results between studies.

Comparison of cognitive performance and aspects of the care context in elderly caregivers in Brazil: a follow-up study / Comparação do desempenho cognitivo e aspectos do contexto do cuidado em idosos cuidadores idosos no Brasil: um estudo de acompanhamento

ABSTRACT. Cognitive health is important for the quality of life and well-being of elderly caregivers. Cognitive impairments can negatively affect the ability to care for oneself and others. Objective: To compare cognitive performance and aspects of the care context in elderly caregivers of older adults in a three-year follow-up investigation Methods: A longitudinal study was conducted of 61 elderly caregivers treated in primary care in a city in the interior of the state of São Paulo with data collected in 2014 and 2017. Sociodemographic characteristics, the care context, cognition, performance for activities of daily living, burden and depressive symptoms were collected in individual interviews. Data analysis was performed to compare categorical and continuous variables. Results: Significant increases were found between baseline and follow-up for the language domain score of the cognitive evaluation (p=0.024), receipt of material support (p=0.020), time providing care (p=0.045) and dependence of elderly care recipient for basic activities of daily living (p=0.042). Conclusion: Elderly caregivers performed better on the domain of language, received more material/financial support, spent more time on care and reported greater dependence of the elderly care recipient.

RESUMO. A saúde cognitiva é importante para a qualidade de vida e bem-estar dos cuidadores idosos. O comprometimento cognitivo pode afetar negativamente a capacidade de cuidar de si e dos outros. Objetivo: Comparar o desempenho cognitivo e os aspectos do contexto do cuidado em idosos cuidadores de idosos em uma de acompanhamento de três anos. Métodos: Trata-se de um estudo longitudinal com medidas em 2014 e 2017, realizado com 61 cuidadores idosos cadastrados na atenção primária de um município do interior do Estado de São Paulo. Características sociodemográficas, contexto do cuidado, cognição, desempenho nas atividades da vida diária, sobrecarga e sintomas depressivos foram coletados em entrevistas individuais. A análise dos dados foi realizada para comparar variáveis categóricas e contínuas. Resultados: Foram encontrados aumentos significativos entre a linha de base e o acompanhamento do escore no domínio da linguagem da avaliação cognitiva (p=0,024), receber ajuda material (p=0,020), tempo de cuidado (p=0,045) e dependência do idoso em relação às atividades básicas da vida diária (p=0,042). Conclusão: Os cuidadores de idosos tiveram melhor desempenho no campo da linguagem, passaram a receber mais apoio material / financeiro, experimentaram aumentos no tempo gasto no cuidado e na dependência do idoso.

Relationship between cognitive processing, language and verbal fluency among elderly individuals.

Some cognitive dimensions, such as attention, memory and executive functions, may decline with age, while other functions remain intact or even improve due to greater life experience. OBJECTIVE: to analyze the relationship between cognitive processing, language and verbal fluency among elderly individuals seen by primary healthcare services located in a city in the interior of São Paulo, Brazil. METHODS: a cross-sectional study with a quantitative method was conducted. A total of 149 elderly individuals were assessed through previously scheduled interviews. Data collection included a questionnaire on sociodemographic data and the Addenbrooke's Cognitive Examination - Revised (ACE-R). Cognitive processing (P300) was assessed using a device that captures potentials elicited in auditory tasks. Descriptive analysis and Spearman's correlation were performed with the level of significance established at 5%. RESULTS: a negative correlation was found between language and P300 latency, while a positive correlation was found between verbal fluency and P300 amplitude. Comprehension and naming tasks showed a negative correlation with latency. The repetition task revealed a positive correlation with P300 amplitude. CONCLUSION: although more extensive testing is needed, these findings suggest that language correlates with P300 latency, whereas verbal fluency correlates with P300 amplitude.

As dimensões cognitivas, como atenção, memória e funções executivas, podem diminuir com a idade, enquanto outras funções permanecem ou até melhoram devido a uma maior experiência de vida. OBJETIVO: analisar a relação entre processamento cognitivo, linguagem e fluência verbal em idosos atendidos em serviços de atenção básica localizados em um município do interior de São Paulo, Brasil. MÉTODOS: estudo transversal, método quantitativo. Um total de 149 idosos foram avaliados por meio de entrevistas previamente agendadas. A coleta de dados incluiu um questionário abordando dados sociodemográficos e o Exame Cognitivo de Addenbrooke - Revisado (ACE-R). O processamento cognitivo (P300) foi avaliado por meio de um dispositivo que capta potenciais elicitados em tarefas auditivas. A análise descritiva e a correlação de Spearman foram realizadas com o nível de significância estabelecido em 5%.\. RESULTADOS: foi encontrada correlação negativa entre a linguagem e a latência do P300 e uma correlação positiva entre a fluência verbal e a amplitude do P300. Tarefas de compreensão e nomeação apresentaram uma correlação negativa com a latência. A tarefa de repetição revelou correlação positiva com a amplitude do P300. CONCLUSÃO: embora testes mais extensos sejam necessários, esses achados sugerem que a correlação de linguagem com a latência e fluência do P300 está correlacionada com a amplitude do P300.

Relationship between cognitive processing, language and verbal fluency among elderly individuals / Relação entre processo cognitivo, linguagem e fluência verbal entre idosos individuais

ABSTRACT Some cognitive dimensions, such as attention, memory and executive functions, may decline with age, while other functions remain intact or even improve due to greater life experience. Objective: to analyze the relationship between cognitive processing, language and verbal fluency among elderly individuals seen by primary healthcare services located in a city in the interior of São Paulo, Brazil. Methods: a cross-sectional study with a quantitative method was conducted. A total of 149 elderly individuals were assessed through previously scheduled interviews. Data collection included a questionnaire on sociodemographic data and the Addenbrooke's Cognitive Examination - Revised (ACE-R). Cognitive processing (P300) was assessed using a device that captures potentials elicited in auditory tasks. Descriptive analysis and Spearman's correlation were performed with the level of significance established at 5%. Results: a negative correlation was found between language and P300 latency, while a positive correlation was found between verbal fluency and P300 amplitude. Comprehension and naming tasks showed a negative correlation with latency. The repetition task revealed a positive correlation with P300 amplitude. Conclusion: although more extensive testing is needed, these findings suggest that language correlates with P300 latency, whereas verbal fluency correlates with P300 amplitude.

RESUMO As dimensões cognitivas, como atenção, memória e funções executivas, podem diminuir com a idade, enquanto outras funções permanecem ou até melhoram devido a uma maior experiência de vida. Objetivo: analisar a relação entre processamento cognitivo, linguagem e fluência verbal em idosos atendidos em serviços de atenção básica localizados em um município do interior de São Paulo, Brasil. Métodos: estudo transversal, método quantitativo. Um total de 149 idosos foram avaliados por meio de entrevistas previamente agendadas. A coleta de dados incluiu um questionário abordando dados sociodemográficos e o Exame Cognitivo de Addenbrooke - Revisado (ACE-R). O processamento cognitivo (P300) foi avaliado por meio de um dispositivo que capta potenciais elicitados em tarefas auditivas. A análise descritiva e a correlação de Spearman foram realizadas com o nível de significância estabelecido em 5%./ Resultados: foi encontrada correlação negativa entre a linguagem e a latência do P300 e uma correlação positiva entre a fluência verbal e a amplitude do P300. Tarefas de compreensão e nomeação apresentaram uma correlação negativa com a latência. A tarefa de repetição revelou correlação positiva com a amplitude do P300. Conclusão: embora testes mais extensos sejam necessários, esses achados sugerem que a correlação de linguagem com a latência e fluência do P300 está correlacionada com a amplitude do P300.

A Method for Simultaneous Evaluation of Muscular and Neural Prepulse Inhibition.

Prepulse inhibition (PPI) test has been widely used to evaluate sensorimotor gating. In humans, deficits in this mechanism are measured through the orbicularis muscle response using electromyography (EMG). Although this mechanism can be modulated by several brain structures and is impaired in some pathologies as schizophrenia and bipolar disorder, neural PPI evaluation is rarely performed in humans. Since eye blinks are a consequence of PPI stimulation, they strongly contaminate the electroencephalogram (EEG) signal. This paper describes a method to reduce muscular artifacts and enable neural PPI assessment through EEG in parallel to muscular PPI evaluation using EMG. Both types of signal were simultaneously recorded in 22 healthy subjects. PPI was evaluated by the acoustical startle response with EMG and by the P2-N1 event-related potential (ERP) using EEG in Fz, Cz, and Pz electrodes. In order to remove EEG artifacts, Independent Component Analysis (ICA) was performed using two methods. Firstly, visual inspection discarded components containing artifact characteristics as ocular and tonic muscle artifacts. The second method used visual inspection as gold standard to validate parameters in an automated component selection using the SASICA algorithm. As an outcome, EEG artifacts were effectively removed and equivalent neural PPI evaluation performance was obtained using both methods, with subjects exhibiting consistent neural as well as muscular PPI. This novel method improves PPI test, enabling neural gating mechanisms assessment within the latency of 100-200 ms, which is not evaluated by other sensory gating tests as P50 and mismatch negativity.

On the use of the P300 as a tool for cognitive processing assessment in healthy aging: A review.

Changes in patterns of performance for the cognitive functions of memory, processing speed, and focused attention are expected in old age. OBJECTIVE: The main goal of this systematic review was to analyze the use of ERP in healthy elderly in studies evaluating the P300 components. METHODS: A systematic review was carried out based on recommendations for nursing research on the databases LILACS, PsycINFO, PubMed, SCOPUS and Web of Science. RESULTS: 26 studies involving 940 healthy elderly were identified, most of which sought to identify and determine the influence of age on the P300. CONCLUSION: Although there is consensus in the literature that P300 latency is significantly longer in elderly with psychiatric disorders compared to healthy elderly, it was not possible to conclude P300 associations with gender, education and other cognitive tests.

São esperadas mudanças nos padrões de desempenho nas funções cognitivas de memória, velocidade de processamento e atenção concentrada durante o processo de envelhecimento. OBJETIVO: O objetivo principal desta revisão sistemática é analisar o uso de ERP em idosos saudáveis nos estudos que avaliaram os componentes do P300. MÉTODOS: Realizou-se uma revisão sistemática com recomendações de estudo para enfermagem nos bancos de dados LILACS, PsycINFO, PubMed, SCOPUS and Web of Science. RESULTADOS: Foram identificados 26 estudos com 940 idosos saudáveis, a maioria procurava identificar e encontrar a influência da idade no P300. CONCLUSÃO: Embora haja consenso na literatura de que em idosos com transtornos psiquiátricos a latência P300 é significativamente maior, em relação aos idosos saudáveis não foi possível concluir as associações P300 com gênero, escolaridade e outros testes cognitivos.

On the use of the P300 as a tool for cognitive processing assessment in healthy aging: A review / O uso do p300 como ferramenta para avaliação do processamento cognitivo em envelhecimento saudável

ABSTRACT Changes in patterns of performance for the cognitive functions of memory, processing speed, and focused attention are expected in old age. Objective: The main goal of this systematic review was to analyze the use of ERP in healthy elderly in studies evaluating the P300 components. Methods: A systematic review was carried out based on recommendations for nursing research on the databases LILACS, PsycINFO, PubMed, SCOPUS and Web of Science. Results: 26 studies involving 940 healthy elderly were identified, most of which sought to identify and determine the influence of age on the P300. Conclusion: Although there is consensus in the literature that P300 latency is significantly longer in elderly with psychiatric disorders compared to healthy elderly, it was not possible to conclude P300 associations with gender, education and other cognitive tests.

RESUMO São esperadas mudanças nos padrões de desempenho nas funções cognitivas de memória, velocidade de processamento e atenção concentrada durante o processo de envelhecimento. Objetivo: O objetivo principal desta revisão sistemática é analisar o uso de ERP em idosos saudáveis nos estudos que avaliaram os componentes do P300. Métodos: Realizou-se uma revisão sistemática com recomendações de estudo para enfermagem nos bancos de dados LILACS, PsycINFO, PubMed, SCOPUS and Web of Science. Resultados: Foram identificados 26 estudos com 940 idosos saudáveis, a maioria procurava identificar e encontrar a influência da idade no P300. Conclusão: Embora haja consenso na literatura de que em idosos com transtornos psiquiátricos a latência P300 é significativamente maior, em relação aos idosos saudáveis não foi possível concluir as associações P300 com gênero, escolaridade e outros testes cognitivos.

Comparative analysis of the electroencephalogram in patients with Alzheimer's disease, diffuse axonal injury patients and healthy controls using LORETA analysis.

Alzheimer's disease (AD) is a dementia that affects a large contingent of the elderly population characterized by the presence of neurofibrillary tangles and senile plaques. Traumatic brain injury (TBI) is a non-degenerative injury caused by an external mechanical force. One of the main causes of TBI is diffuse axonal injury (DAI), promoted by acceleration-deceleration mechanisms. OBJECTIVE: To understand the electroencephalographic differences in functional mechanisms between AD and DAI groups. METHODS: The study included 20 subjects with AD, 19 with DAI and 17 healthy adults submitted to high resolution EEG with 128 channels. Cortical sources of EEG rhythms were estimated by exact low-resolution electromagnetic tomography (eLORETA) analysis. RESULTS: The eLORETA analysis showed that, in comparison to the control (CTL) group, the AD group had increased theta activity in the parietal and frontal lobes and decreased alpha 2 activity in the parietal, frontal, limbic and occipital lobes. In comparison to the CTL group, the DAI group had increased theta activity in the limbic, occipital sublobar and temporal areas. CONCLUSION: The results suggest that individuals with AD and DAI have impairment of electrical activity in areas important for memory and learning.

A dooença de Alzheimer (DA) é uma demência que acomete uma grande parcela da população idosa e caracteriza-se pela presença de emaranhados neurofibrilares e placas senis. O traumatismo cranioencefálico (TCE) é uma lesão não degenerativa causada por uma força mecânica externa. Uma das principais causas de TCE é a lesão axonal difusa (LAD), causada por mecanismos de aceleração-desaceleração. OBJETIVO: Entender as diferenças dos mecanismos funcionais entre os grupos - DA e LAD do ponto de vista eletroencefalográfico. MÉTODOS: Participaram deste estudo 56 indivíduos adultos. Destes, 20 com DA, 19 com LAD e 17 adultos saudáveis submetidos ao EEG de alta resolução com 128 canais. As fontes corticais dos ritmos do EEG foram estimadas pela análise por tomografia eletromagnética exata de baixa resolução (eLORETA). RESULTADOS: A análise por eLORETA mostrou que, em comparação ao grupo controle (CTL), o grupo DA apresentou aumento da atividade teta nos lobos parietal e frontal e diminuição da atividade alfa 2 nos lobos parietal, frontal, límbico e occipital. Em comparação ao grupo CTL, o grupo LAD apresentou aumento da atividade teta nas áreas límbica, occipital sub-lobar e temporal. CONCLUSÃO: Os resultados sugerem que os indivíduos com DA e com LAD apresentam comprometimento da atividade elétrica em áreas importantes para a memória e aprendizagem.

Comparative analysis of the electroencephalogram in patients with Alzheimer's disease, diffuse axonal injury patients and healthy controls using LORETA analysis / Análise comparativa do eletroencefalograma em pacientes com doença de alzheimer, lesão axonal difusa e controles saudáveis: e análise loreta

ABSTRACT Alzheimer's disease (AD) is a dementia that affects a large contingent of the elderly population characterized by the presence of neurofibrillary tangles and senile plaques. Traumatic brain injury (TBI) is a non-degenerative injury caused by an external mechanical force. One of the main causes of TBI is diffuse axonal injury (DAI), promoted by acceleration-deceleration mechanisms. Objective: To understand the electroencephalographic differences in functional mechanisms between AD and DAI groups. Methods: The study included 20 subjects with AD, 19 with DAI and 17 healthy adults submitted to high resolution EEG with 128 channels. Cortical sources of EEG rhythms were estimated by exact low-resolution electromagnetic tomography (eLORETA) analysis. Results: The eLORETA analysis showed that, in comparison to the control (CTL) group, the AD group had increased theta activity in the parietal and frontal lobes and decreased alpha 2 activity in the parietal, frontal, limbic and occipital lobes. In comparison to the CTL group, the DAI group had increased theta activity in the limbic, occipital sublobar and temporal areas. Conclusion: The results suggest that individuals with AD and DAI have impairment of electrical activity in areas important for memory and learning.

RESUMO A dooença de Alzheimer (DA) é uma demência que acomete uma grande parcela da população idosa e caracteriza-se pela presença de emaranhados neurofibrilares e placas senis. O traumatismo cranioencefálico (TCE) é uma lesão não degenerativa causada por uma força mecânica externa. Uma das principais causas de TCE é a lesão axonal difusa (LAD), causada por mecanismos de aceleração-desaceleração. Objetivo: Entender as diferenças dos mecanismos funcionais entre os grupos - DA e LAD do ponto de vista eletroencefalográfico. Métodos: Participaram deste estudo 56 indivíduos adultos. Destes, 20 com DA, 19 com LAD e 17 adultos saudáveis submetidos ao EEG de alta resolução com 128 canais. As fontes corticais dos ritmos do EEG foram estimadas pela análise por tomografia eletromagnética exata de baixa resolução (eLORETA). Resultados: A análise por eLORETA mostrou que, em comparação ao grupo controle (CTL), o grupo DA apresentou aumento da atividade teta nos lobos parietal e frontal e diminuição da atividade alfa 2 nos lobos parietal, frontal, límbico e occipital. Em comparação ao grupo CTL, o grupo LAD apresentou aumento da atividade teta nas áreas límbica, occipital sub-lobar e temporal. Conclusão: Os resultados sugerem que os indivíduos com DA e com LAD apresentam comprometimento da atividade elétrica em áreas importantes para a memória e aprendizagem.

Índice Percentual de Identificação de Fonemas Fricativos: proposta para avaliação da compressão de frequências / Fricative Phonemes Identification Index: proposal for frequency compression evaluation

RESUMO Objetivo Desenvolver um teste para avaliar a compressão de frequências por meio da identificação de fonemas fricativos e aplicá-lo. Métodos Organizou-se um material de fala composto por 24 palavras monossilábicas, contendo os fonemas /s, z, f, v, ∫, 3/. As palavras foram gravadas por oito sujeitos, totalizando uma amostra de 192 gravações. Aplicaram-se filtros passa-baixas nas palavras com frequências de cortes em 1,5 kHz; 2 kHz e 3 kHz, a fim de impedir a detecção sonora nas faixas de frequências filtradas, simulando perdas auditivas em frequências altas. Aplicou-se o teste em dez indivíduos normo-ouvintes, que deveriam ouvir a palavra e identificá-la na tela de um computador. Foram oferecidas 12 opções de resposta, fixando a vogal e variando o fonema fricativo inicial e a presença da fricativa final /s/. O teste foi composto por 384 repetições de palavras, sendo 192 com compressão de frequências. As respostas foram computadas e comparadas por meio de testes estatísticos. Resultados A identificação dos fonemas foi favorecida pelo aumento da frequência de corte, exceto em 3 kHz. Houve melhora na identificação dos fonemas fricativos /∫, 3/ com o uso da compressão de frequências, porém, para os demais fonemas avaliados (/f, v/ e /s, z/) não houve diferenças. Conclusão O teste de identificação de fonemas fricativos se mostrou eficiente e confiável. Para as frequências de corte em 1,5 kHz e 2 kHz, a compressão de frequências foi eficaz para a identificação dos fonemas fricativos /∫, 3/, porém, a identificação do /s/ final mostrou-se comprometida pelo algoritmo.

ABSTRACT Purpose Develop a test to evaluate frequency compression by identifying and applying fricative phonemes. Methods A speech material was composed of 24 monosyllabic words, containing the phonemes /s, z, f, v, ∫, 3/. Eight subjects recorded words, for a total sample of 192 recordings. Low-pass filters were applied to words with cutoff points values of 1,5 kHz; 2 kHz e 3 kHz, in order to prevent sound detection in the filtered frequency bands, simulating hearing loss at high frequencies. The test was applied to ten normal hearing individuals, who had to listen to the word and identify it on a computer screen. Twelve response options were offered, fixing the vowel and varying the initial fricative phoneme and the presence of the final fricative /s/. The test consisted of 384 word repetitions, 192 with frequency compression. Responses were computed and compared using statistical tests. Results The identification of the phonemes was favored by the increase of the cutoff frequency, except in 3 kHz. There was improvement in the identification of fricative phonemes /∫, 3/ with the use of frequency compression, however, for the other assessed phonemes (/f, v/ e /s, z/) no differences were found. Conclusion The identification test of fricative phonemes was efficient and reliable. For the cutoff frequencies in 1,5 kHz e 2 kHz, the frequency compression was effective for the identification of the fricative phonemes /∫, 3/, however the identification of /s/ at the end was affected by the algorithm.