Neurological impressions on the organization of language networks in the human brain.

BACKGROUND: More than 95% of right-handed individuals, as well as almost 80% of left-handed individuals, have left hemisphere dominance for language. The perisylvian networks of the dominant hemisphere tend to be the most important language systems in human brains, usually connected by bidirectional fibres originated from the superior longitudinal fascicle/arcuate fascicle system and potentially modifiable by learning. Neuroplasticity mechanisms take place to preserve neural functions after brain injuries. Language is dependent on a hierarchical interlinkage of serial and parallel processing areas in distinct brain regions considered to be elementary processing units. Whereas aphasic syndromes typically result from injuries to the dominant hemisphere, the extent of the distribution of language functions seems to be variable for each individual. METHOD: Review of the literature Results: Several theories try to explain the organization of language networks in the human brain from a point of view that involves either modular or distributed processing or sometimes both. The most important evidence for each approach is discussed under the light of modern theories of organization of neural networks. CONCLUSIONS: Understanding the connectivity patterns of language networks may provide deeper insights into language functions, supporting evidence-based rehabilitation strategies that focus on the enhancement of language organization for patients with aphasic syndromes.

Swallowing in behavioral variant frontotemporal dementia.

BACKGROUND: Swallowing and feeding problems may occur with the progression of behavioral variant frontotemporal dementia (bvFTD) and can impair the anticipatory and oral preparatory phases of swallowing. OBJECTIVE: To characterize swallowing problems and the feeding situation of patients with bvFTD and to correlate the swallowing problems with functionality, executive functions, cognitive and behavioral features. METHODS: Consecutive outpatients with bvFTD in mild, moderate and severe dementia stages were recruited along with their caregivers. Patients and caregivers were screened with the following scales: "Mini-Mental State Examination", "Severe Mini-Mental State Examination", "FTLD-modified Clinical Dementia Rating", "Neuropsychiatric Inventory", "Frontal Assessment Battery", "Index of Independence in Activities of Daily Living", "Swallowing Rating Scale" and "Assessment of Feeding and Swallowing Difficulties in Dementia". RESULTS: Overall, thirty patients with bvFTD were included along with their caregivers. Patients with bvFTD showed feeding and swallowing difficulties such as: messy to eat, passivity, coughing and choking, difficulty with some food consistencies and with specific food. Swallowing problems in bvFTD correlated with impaired functionality (p<0.05) and cognition (p<0.05), executive dysfunction (p<0.01) and behavioral features (p<0.01). Caregivers had great difficulty in managing the feeding situation during mealtime, with different characteristics in each dementia stage. CONCLUSION: Patients with bvFTD had inappropriate speed eating, passivity, coughing and choking starting in the mild dementia stage, and these problems worsen in the severe stage. Such difficulties affected caregiver performance during mealtime. The correlations indicated that swallowing difficulties tend to follow cognitive and behavioral decline in patients with bvFTD.

Neuropsychiatric feature profiles of patients with Lewy body dementia.

OBJECTIVE: Differential diagnosis between Parkinson's disease (PD) dementia and dementia with Lewy bodies (DLB) is difficult due to common features, whereas management decisions and research endpoints depend upon knowledge of dementia severity. We aimed to assess risk factors for age at dementia onset, as well as which neuropsychiatric features are associated with pharmacotherapy and signs and symptoms of Lewy body dementia. PATIENTS AND METHODS: Patients with PD dementia or DLB were evaluated for age at disease onset, education, sanitation, anthropometric measures, alcohol use, smoking, history of infections or head trauma with unconsciousness, family history of neurodegenerative diseases, functional independence, cognition, behavior, motor features, caregiver burden and pharmacotherapy. RESULTS: Fifty-one patients were recruited (37 with DLB, 14 with PD dementia). Cumulative alcohol use and married status were associated with earlier dementia onset, whereas history of treated systemic infections and cumulative family history of primary neurodegenerative diseases led to later dementia onset. The length of dementia was shorter only for severely impaired patients who used anti-depressants, but not for users of cholinesterase inhibitors, while no behavioral symptom was associated with dopaminergic therapy. Night-time behavior disturbances were inversely associated with sleep satisfaction, while caregiver burden was more affected by depression and motor features. Non-motor symptoms were more burdensome for patients with DLB, while in PD dementia anxiety and dysphoria occurred when motor features were less burdensome. CONCLUSIONS: PD dementia and DLB are two phenotypes of the same pathological entity, differing mostly by the occurrence of parkinsonian signs. Predictors of dementia onset differ from other neurodegenerative diseases.

Swallowing in primary progressive aphasia.

BACKGROUND: Few studies have described characteristics of swallowing in primary progressive aphasia (PPA) and its variants. OBJECTIVE: To describe and characterize swallowing and eating behaviors of patients with PPA, as well as their correlates with neuropsychiatric symptoms and patterns of communication. METHODS: We studied 16 patients with PPA and 16 their caregivers. PPA was subdivided in agrammatic variant (PPA-G), semantic variant (PPA-S) and logopenic variant (PPA-L). All patients and their caregivers were screened with the following scales: "Assessment of Feeding and Swallowing Difficulties in Dementia", "Neuropsychiatric Inventory", and "Functional Outcome Questionnaire for Aphasia". RESULTS: Patients with PPA-S had diverse swallowing problems such as drooling of saliva or food, multiple swallows, delayed swallow and choking, all of which correlated with anxiety, apathy and aberrant motor behavior. Patients with PPA-G and PPA-L had choking and delayed swallow, respectively. Disturbances in eating behaviors were more frequent in the group with PPA-L, and they correlated with difficulties in patterns of communication. CONCLUSIONS: All variants showed swallowing difficulties and they were more frequent in PPA-S. Further studies with larger samples of patients are needed to better characterize swallowing problems and their consequences in the different variants of PPA.

Swallowing in behavioral variant frontotemporal dementia / Deglutição na variante comportamental da demência frontotemporal

ABSTRACT Background: Swallowing and feeding problems may occur with the progression of behavioral variant frontotemporal dementia (bvFTD) and can impair the anticipatory and oral preparatory phases of swallowing. Objective: To characterize swallowing problems and the feeding situation of patients with bvFTD and to correlate the swallowing problems with functionality, executive functions, cognitive and behavioral features. Methods: Consecutive outpatients with bvFTD in mild, moderate and severe dementia stages were recruited along with their caregivers. Patients and caregivers were screened with the following scales: "Mini-Mental State Examination", "Severe Mini-Mental State Examination", "FTLD-modified Clinical Dementia Rating", "Neuropsychiatric Inventory", "Frontal Assessment Battery", "Index of Independence in Activities of Daily Living", "Swallowing Rating Scale" and "Assessment of Feeding and Swallowing Difficulties in Dementia". Results: Overall, thirty patients with bvFTD were included along with their caregivers. Patients with bvFTD showed feeding and swallowing difficulties such as: messy to eat, passivity, coughing and choking, difficulty with some food consistencies and with specific food. Swallowing problems in bvFTD correlated with impaired functionality (p<0.05) and cognition (p<0.05), executive dysfunction (p<0.01) and behavioral features (p<0.01). Caregivers had great difficulty in managing the feeding situation during mealtime, with different characteristics in each dementia stage. Conclusion: Patients with bvFTD had inappropriate speed eating, passivity, coughing and choking starting in the mild dementia stage, and these problems worsen in the severe stage. Such difficulties affected caregiver performance during mealtime. The correlations indicated that swallowing difficulties tend to follow cognitive and behavioral decline in patients with bvFTD.

RESUMO Introdução: Os problemas na situação de alimentação e deglutição podem ocorrer com a progressão da variante comportamental da demência frontotemporal (DFT-vc) e alterar as fases antecipatória e preparatória oral da deglutição. Objetivo: Caracterizar os problemas de deglutição e a situação de alimentação de pacientes com DFT-vc e correlacionar os problemas de deglutição com a funcionalidade, funções executivas, aspectos cognitivos e comportamentais. Métodos: Foram recrutados pacientes ambulatoriais com DFT-vc nas fases leve, moderada e grave da demência, e seus respectivos cuidadores. Os pacientes e cuidadores foram avaliados com as escalas: "Mini-Exame do Estado Mental", "Mini-Exame do Estado Mental Grave", "Escala de Avaliação Clínica da Demência Modificada - DFT", "Inventário Neuropsiquiátrico", "Bateria de Avaliação Frontal", "Índice de Independência nas Atividades da Vida Diária", "Escala Funcional de Avaliação da Deglutição" e "Avaliação das Dificuldades de Alimentação e Deglutição na Demência". Resultados: Foram incluídos 30 pacientes com DFT-vc, e seus cuidadores. Pacientes com DFT-vc apresentaram dificuldades de alimentação e deglutição como: confusão na alimentação, passividade, tosse e asfixia, dificuldades com algumas consistências alimentares e alimentos específicos. Problemas de deglutição na DFT-vc correlacionaram-se com funcionalidade prejudicada (p<0,05) e cognição (p<0,05), disfunção executiva (p<0,01) e características comportamentais (p<0,01). Os cuidadores tiveram grande dificuldade em gerenciar a situação de alimentação diante de diferentes problemas em cada fase da demência. Conclusão: Pacientes com DFT-vc apresentaram velocidade de alimentação inapropriada, passividade, tosse e engasgos já na fase leve da doença, com piora na fase grave. As correlações indicaram que as alterações de deglutição tendem a seguir o declínio cognitivo e comportamental na DFT-vc.

Educational bias in the assessment of severe dementia: Brazilian cutoffs for severe Mini-Mental State Examination.

UNLABELLED: Cognitive assessment in advanced stages of Alzheimer's disease (AD) is limited by the imprecision of most instruments. OBJECTIVE: To determine objective cognitive responses in moderate and severe AD patients by way of the Severe Mini-Mental State Examination (SMMSE), and to correlate performances with Mini-Mental State Examination (MMSE) scores. METHOD: Consecutive outpatients in moderate and severe stages of AD (Clinical Dementia Rating 2.0 or 3.0) were evaluated and compared according to MMSE and SMMSE scores. RESULTS: Overall 400 patients were included, 67.5% females, mean age 76.6±6.7 years-old. There was no significant impact of age or gender over MMSE or SMMSE scores. Mean schooling was 4.4±2.5 years, impacting SMMSE scores (p=0.008). Scores on MMSE and SMMSE were significantly correlated (F-ratio=690.6325, p<0.0001). CONCLUSION: The SMMSE is influenced by schooling, but not by age or gender, and is an accurate test for assessment of moderate and severe AD.

Neuropsicologia como especialidade na Fonoaudiologia: Consenso de Fonoaudiólogos Brasileiros / Neuropsychology as a specialty in Speech Language and Hearing Sciences: Consensus of Brazilian Speech Language Pathologists and Audiologists / Neuropsicología como especialidad en Fonoaudiología: Consenso de Fonoaudiólogos Brasileños

Em janeiro de 2015, o Conselho Federal de Fonoaudiologia publicou a resolução que dispõe sobre as atribuições e competências relativas ao Fonoaudiólogo Especialista em Neuropsicologia. Dada a importância do reconhecimento dessa especialidade, faz-se necessário divulgar o histórico da atuação do fonoaudiólogo na área e refletir sobre seu papel na Neuropsicologia. Estima-se que o reconhecimento da atuação fonoaudiológica na área da Neuropsicologia produzirá maior investimento no desenvolvimento de práticas profissionais compatíveis com o alto desempenho em avaliação e intervenção neuropsicológicas para a saúde da comunicação em nosso país.

In January, 2015, the Federal Council of Speech Language and Hearing Sciences in Brazil published a resolution which describes the competences and roles of Speech-Language Pathologists and Audiologists with Specialty in Neuropsychology. This article aims to present the history of professional's participation in the area and to reflect on the importance of this specialty. It is estimated that the recognition of speech pathologists in the field of neuropsychology will produce greater investment in the development of professional practices compatible with the high performance of neuropsychological assessment and intervention of cognitive communicative disorders in our country.

En enero de 2015 el Consejo Federal de Fonoaudiología en Brasil publicó la resolución que prevé las competencias y misiones del Fonoaudiólogo Especialista en Neuropsicología. Dada la importancia del reconocimiento de esta especialidad, se hace necesario revelar el historial de la actuación del fonoaudiólogo en el área y reflexionar sobre sus roles en la Neuropsicología. Se estima que el reconocimiento de los fonoaudiólogos en el campo de la Neuropsicología producirá mayor investimento en el desarrollo de prácticas profesionales compatibles con la alta performance de la evaluación y intervención neuropsicológicas para la salud en comunicación en nuestro país.

Correlation and adaptation among functional and cognitive instruments for staging and monitoring Alzheimer?s disease in advanced stages / Adaptação e correlação entre instrumentos cognitivos e funcionais para o estadiamento e acompanhamento da doença de Alzheimer em fases avançadas

Background: Although Alzheimer’s disease (AD) is the most prevalent form of dementia, little is known about cognitive and functional aspects in its advanced stages. Objective: This study aimed the adaptation and correlation among specific instruments for AD in advanced stages with regard to cognition objectively weighted, besides the comparison between static and ecological aspects of functional capacity. Methods: 95 moderate, moderatly severe and severe AD patients (33 men and 62 women) underwent the scales CDR (Clinical for Dementia Rating), FAST (Functional Assessment Scale), MMSE (Mini-Mental State Exame), MMSEsev (Severe Mini-Mental State Examination), SIB-8 (Severe Impairment Battery) and TSI (Test for Severe Impairment), for the comparison with a golden-standard ecological scale the PADL (Performance Activities of Daily Living). Results: The evidence suggests an increasing and statistically significant linear correlation between the ecological functional scale and cognitive tests according to the stratification of AD stages once weighted by static functional scale. Discussion: The results indicate that for patients in advanced stages of AD, appropriate cognitive tests and performance-based functional scales are useful in more accurate assessment of disease staging and monitoring its progression...

Contexto: Apesar de a doença de Alzheimer (DA) ser a forma de demência mais prevalente, pouco se sabe sobre aspectos cognitivos e funcionais em suas fases avançadas. Objetivo: Foi objetivo deste trabalho a adaptação e correlação entre instrumentos específicos para a DA em fases avançadas no que diz respeito à sua cognição objetivamente ponderada, além da comparação entre aspectos da capacidade funcional estática e ecológica. Métodos: Noventa e cinco pacientes (33 homens e 62 mulheres) com DA moderada, moderadamente grave e grave foram submetidos às escalas CDR (Clinical for Dementia Rating), FAST (Functional Assessment Scale), MEEM (Mini-Mental State Examination), MMSEsev (Severe Mini-Mental State Examination), SIB-8 (Severe Impairment Battery) e TSI (Test for Severe Impairment) para comparação com uma escala ecológica padrão-ouro, a PADL (Performance Activities of Daily Living). Resultados: As evidências encontradas sugerem uma correlação linear crescente e estatisticamente significativa entre a escala funcional ecológica e os testes cognitivos conforme a estratificação das fases da DA uma vez ponderadas pela escala funcional estática. Conclusão: Os resultados indicam que, para pacientes em fases avançadas da DA, testes cognitivos apropriados e escalas funcionais baseadas no desempenho são úteis na avaliação mais acurada do estadiamento da doença e acompanhamento de sua progressão...

Educational bias in the assessment of severe dementia: Brazilian cutoffs for severe Mini-Mental State Examination / Viés educacional na avaliação da demência grave: pontos de corte brasileiros para o Miniexame do Estado Mental grave

Cognitive assessment in advanced stages of Alzheimer’s disease (AD) is limited by the imprecision of most instruments. Objective: To determine objective cognitive responses in moderate and severe AD patients by way of the Severe Mini-Mental State Examination (SMMSE), and to correlate performances with Mini-Mental State Examination (MMSE) scores. Method: Consecutive outpatients in moderate and severe stages of AD (Clinical Dementia Rating 2.0 or 3.0) were evaluated and compared according to MMSE and SMMSE scores. Results: Overall 400 patients were included, 67.5% females, mean age 76.6±6.7 years-old. There was no significant impact of age or gender over MMSE or SMMSE scores. Mean schooling was 4.4±2.5 years, impacting SMMSE scores (p=0.008). Scores on MMSE and SMMSE were significantly correlated (F-ratio=690.6325, p<0.0001). Conclusion: The SMMSE is influenced by schooling, but not by age or gender, and is an accurate test for assessment of moderate and severe AD. .

A avaliação cognitiva na doença de Alzheimer (DA) avançada é insuficiente pela imprecisão dos instrumentos. Objetivo: Determinar respostas cognitivas objetivas em pacientes com DA moderada e grave por meio do Mini-Exame do Estado Mental Grave (MEEM-g) e correlacionar o seu desempenho com o Mini-Exame do Estado Mental (MEEM). Método: Pacientes consecutivos com DA moderada e grave (Clinical Dementia Rating – CDR: 2.0 e 3.0) foram avaliados e comparados conforme seus intervalos nos testes MEEM e MEEM-g. Resultados: Dentre 400 pacientes incluídos, 67,5% foram mulheres, com média de idade 76.6±6.7 anos. Não houve impacto significativo de gênero ou idade nas pontuações do MEEM ou MEEM-g. A escolaridade média foi de 4.4±2.5 anos, impactando nos escores do MEEM-g (p=0.008). Pontuações no MEEM e MEEM-g correlacionaram-se significativamente (F-ratio=690.6325, p<0.0001). Conclusão: O MEEM-g sofre influência da escolaridade, mas não de idade ou gênero, contribuindo para a precisão na avaliação da DA moderada ou grave. .

Avaliação fonoaudiológica da deglutição na demência frontotemporal / Phonoaudiological swallowing evaluation in frontotemporal dementia

Introdução: A deglutição e suas características principais ainda são desconhecidas na demência frontotemporal. Objetivos: Caracterizar a deglutição e o comportamento alimentar de pacientes com diagnóstico de demência frontotemporal que apresentam a variante comportamental (DFTvc) e a afasia progressiva primária (APP). Caracterizar os pacientes com DFT e seus cuidadores. Descrever aspectos cognitivos e comportamentais, funcionalidade global, comunicação funcional, e a funcionalidade da deglutição na DFT. Descrever os problemas de deglutição e do comportamento alimentar na DFTvc e APP. Correlacionar os aspectos cognitivos e comportamentais, funcionalidade global e a comunicação com as características da deglutição. Identificar fatores preditivos da piora da funcionalidade da deglutição e do comportamento alimentar na DFT. Avaliar o comportamento dos instrumentos empregados. Desenvolver a versão reduzida do Questionário de Habilidades de Alimentação e Deglutição nas Demências e do Questionário de Comunicação Funcional na Afasia. Método: Este estudo incluiu 46 indivíduos com DFT nas fases leve, moderada e grave, e seus 46 cuidadores. O Mini exame do estado mental (MEEM) e o Mini exame do estado mental grave (MEEM-g) foram usados para avaliar os aspectos cognitivos. A Escala de estadiamento da demência (CDR-DLFT) foi usada para confirmar a fase da doença. O Inventário Neuropsiquiátrico (INP) foi aplicado para investigar os problemas comportamentais. A Bateria de Avaliação Frontal (BAF) investigou as funções executivas. O Índice das Atividades de Vida Diária (Katz), Questionário para Avaliação da Comunicação Funcional na Afasia (QACFA) e a Escala de funcionalidade da deglutição (EFD) avaliaram as habilidades funcionais. O Questionário de Habilidades de Alimentação e Deglutição nas Demências (QHADD) avaliou as dificuldades na deglutição e alimentação. Resultados: Os grupos DFTvc e APP não mostraram diferença estatisticamente significante no MEEM,...

Introduction: Swallowing and its main characteristics are still unknown in frontotemporal dementia. Objectives: To characterize swallowing and feeding behavior of patients with frontotemporal dementia who have behavioral variant (bvFTD) and primary progressive aphasia (PPA). To characterize patients with FTD and their caregivers.To describe cognitive and behavioral aspects, functionalstatus, functional communication, and swallowing function in FTD.To describe swallowing problems and feeding behavior in bvFTD and PPA. To correlate cognitive and behavioral aspects, functional status, and communication with swallowing. To identify predictive factors associated with worsening of functionality of swallowing and feeding behavior in FTD. To evaluate the instruments used. To develop reduced versions of: "Assessment of Feeding and Swallowing Difficulties in Dementia" and "Functional Outcome Questionnaire Aphasia". Method: This study included 46 individuals with FTD in mild, moderate and severe phases, and their 46 caregivers. The Mini mental state examination (MMSE) and the Severe Mini mental state examination (SMMSE) were used to assess the cognitive aspects. The FTLD-modified Clinical Dementia Rating scale (FTLD-CDR) was used to confirm the stage of the disease. The Neuropsychiatric Inventory (NPI) was applied to investigate the behavioral problems. The Frontal Assessment Battery (FAB) investigated executive functions. The Index of Activities of Daily Living (Katz), Functional Outcome Questionnaire- Aphasia and Swallowing rating scale (SRE) evaluated the functional abilities. The Assessment of Feeding and Swallowing Difficulties in Dementia (QHADD) evaluated the difficulties in swallowing and feeding. Results: bvFTD and PPA groups showed no statistically significant difference in MMSE, CDR and FAB. Caregivers of patients with bvFTD had more hours of care per day compared to patients with PPA (p < 0.05). The groups differed in SRE (p < 0.05). The behavioral...