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1.
Front Neurosci ; 18: 1346095, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38406588

RESUMO

Introduction: Anodal transcranial Direct Current Stimulation (tDCS) is a non-invasive, low-cost and environment-friendly brain neuromodulation technique that increases cortical excitability. In post-stroke aphasia, the role of the right hemisphere in language recovery remains debated. In this preliminary study, we aimed to investigate the efficacy of excitatory tDCS on the right hemisphere in chronic aphasic patients. Methods: We applied anodal tDCS to the right homologous region of Broca's area in four chronic aphasic patients while performing a one-month naming rehabilitation treatment. Longitudinal data on language assessment and naming performance were collected. Resting-state fMRI images were acquired before and after treatment to measure changes in functional connectivity. Results: Results showed enhanced positive functional connectivity of the right Broca homologous with the left middle frontal and middle temporal gyri. Every patient showed improvements in language functions, but no major changes in naming performance. Conclusion: These preliminary findings suggest that tDCS applied over the unaffected hemisphere may result in longitudinal inter-hemispheric functional neuroplastic changes that could specifically improve language recovery and could potentially be included in therapeutic neurorehabilitative plans.

2.
Artigo em Inglês | MEDLINE | ID: mdl-37292026

RESUMO

The present study aimed at deriving, by means of a traditional "2 standard deviation-based" (2SD) approach, single task-level cutoffs for the Italian version of the Edinburgh Cognitive and Behavioral ALS Screen (ECAS). Cutoffs were derived - as M-2*SD - from the sample of healthy participants (HPs) included within 2016 Poletti et al.'s normative study - N = 248; 104 males; age: 57.8 ± 10.6; education: 14.1 ± 4.6 - separately for the four, original demographic classes: 1) education <14 years and age ≤60 years; 2) education <14 years and age >60 years; 3) education ≥14 years and age ≤60 years; 4) education ≥14 years and age >60 years. The prevalence of deficits on each task was then estimated within a cohort of N = 377 amyotrophic lateral sclerosis (ALS) patients without dementia. The distribution of abnormal performance prevalences was overall consistent with the cognitive phenotype of ALS. In conclusion, the single task-level cutoffs herewith provided for the Italian version of the ECAS, which complement those already available within Poletti et al.'s normative framework, will help better profile Italian ALS patients' cognitive phenotype within both clinical and research settings.

3.
Neuropsychol Rehabil ; 33(3): 393-408, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37070855

RESUMO

The early identification of the discharge setting from Inpatient Rehabilitation Facilities is a primary goal in stroke-related research because of its clinical and socio-economic relevance. Several features have been identified as significant predictors of the discharge setting. Within cognitive deficits, aphasia is known to be a common and disabling condition that could influence rehabilitation outcome. However, it is often set as an exclusion criterion in stroke research. This study aims to investigate the predictive power of clinical variables, in particular specific language disturbances and nonlinguistic cognitive deficits, for discharge setting in post-acute stroke patients with aphasia after intensive multidisciplinary rehabilitation. In a sample of 158 patients, demographic, motor, language, and nonverbal cognitive data were retrospectively considered for the prediction of the discharge to home vs. another institutional setting. Univariate analysis identified relevant differences between groups and the significant variables were included in a logistic regression model. The results showed that better functional motor status, absence of dysphagia and unimpaired nonlinguistic cognitive profile independently predict the discharge to home. In particular, nonverbal cognitive functioning seemed to be specifically relevant within the aphasic population. The findings could be helpful for setting up the rehabilitation priorities and an adequate discharge arrangement.


Assuntos
Afasia , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Alta do Paciente , Afasia/etiologia , Afasia/reabilitação , Acidente Vascular Cerebral/complicações , Recuperação de Função Fisiológica , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais
4.
Int J Lang Commun Disord ; 58(4): 1182-1190, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36726040

RESUMO

BACKGROUND: The comprehension profile of people with agrammatism is a debated topic. Syntactic complexity and cognitive resources, in particular phonological short-term memory (pSTM), are considered as crucial components by different interpretative accounts. AIM: To investigate the interaction of syntactic complexity and of pSTM in sentence comprehension in a group of persons with aphasia with and without agrammatism. METHODS & PROCEDURES: A cohort of 30 participants presenting with aphasia was assessed for syntactic comprehension and for pSTM. A total of 15 presented with agrammatism and 15 had fluent aphasia. OUTCOMES & RESULTS: Linear nested mixed-model analyses revealed a significant interaction between sentence type and pSTM. In particular, participants with lower pSTM scores showed a reduced comprehension of centre-embedded object relatives and long coordinated sentences. Moreover, a significant interaction was found between sentence type and agrammatism, with a lower performance for passives within the agrammatic group. CONCLUSIONS & IMPLICATIONS: These results confirm that pSTM is involved in the comprehension of complex structures with an important computational load, in particular coordinated sentences, and long-distance filler gap dependencies. On the contrary, the specific deficit of the agrammatic group with passives is a pure syntactic deficit, with no involvement of pSTM.


Assuntos
Afasia de Broca , Compreensão , Memória de Curto Prazo , Humanos , Afasia de Broca/psicologia , Idioma , Semântica
5.
Eur J Neurol ; 30(3): 606-611, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36445001

RESUMO

BACKGROUND AND PURPOSE: This study aimed at estimating the prevalence of language impairment (LI) in a large, clinic-based cohort of non-demented amyotrophic lateral sclerosis (ALS) patients and assessing its underpinnings at motor and non-motor levels. METHODS: Non-demented ALS patients (N = 348) underwent the Edinburgh Cognitive and Behavioural ALS Screen (ECAS), as well as an assessment of behavioural/psychiatric and motor-functional features. The prevalence of LI was estimated based on the proportion of patients showing a performance below the age- and education-adjusted cut-off on the ECAS-Language. Multiple regression models were run to assess the determinants of language functioning and impairment. RESULTS: The prevalence of LI was 22.7%. 46.6% of the variance of ECAS-Language scores remained unexplained, with only the ECAS-Executive positively predicting them (p < 0.001; η2  = 0.07). Similarly, only a lower score on the ECAS-Executive predicted a higher probability of a below cut-off ECAS-Language performance (p < 0.001). Spelling and Naming tasks were the major drivers of ECAS-Language performance. CONCLUSIONS: This study suggests that, in non-demented ALS patients, LI occurs in ≈23% of cases, is significantly driven by executive dysfunction but, at the same time, partially independent of it and is not associated with other motor or non-motor features.


Assuntos
Esclerose Lateral Amiotrófica , Disfunção Cognitiva , Transtornos do Desenvolvimento da Linguagem , Humanos , Esclerose Lateral Amiotrófica/complicações , Esclerose Lateral Amiotrófica/epidemiologia , Esclerose Lateral Amiotrófica/psicologia , Prevalência , Testes Neuropsicológicos , Disfunção Cognitiva/etiologia , Disfunção Cognitiva/complicações , Cognição
6.
Artigo em Inglês | MEDLINE | ID: mdl-36286187

RESUMO

This study aimed at providing standardized regression-based (SRB) reliable change indices (RCIs) for the Italian Edinburgh Cognitive and Behavioral ALS Screen (ECAS). Thirty-one consecutive ALS patients undergoing the ECAS were followed-up (T1) at 6.5 ± 1 months (range = 5-8). Ceiling/floor effects, practice effect, and test-retest reliability were assessed. Each ECAS measure was regressed by stepwise-entering as predictors demographics, respective T0 scores, T0 disease duration and ALSFRS-R, retest interval, and progression rate (ΔFS) - i.e., (48 - ALSFRS-RT0)/disease durationT0 in months. Ceiling effects were infrequently detected, no practice effect emerged and all ECAS measures were reliable at retest (except for Language and Visuo-spatial subscales). T0 scores predicted all ECAS measures except for the Visuo-spatial subscale. The availability of RCIs for the Italian ECAS will aid ALS-related clinical practice and research within the longitudinal dimension.


Assuntos
Esclerose Lateral Amiotrófica , Transtornos Cognitivos , Humanos , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Transtornos Cognitivos/psicologia , Esclerose Lateral Amiotrófica/diagnóstico , Esclerose Lateral Amiotrófica/psicologia , Reprodutibilidade dos Testes , Testes Neuropsicológicos , Idioma , Itália/epidemiologia , Cognição
7.
Front Aging Neurosci ; 14: 1031908, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36408105

RESUMO

Background: The semiology and determinants of apathy are largely unknown across amyotrophic lateral sclerosis (ALS), Parkinson's disease (PD), and Huntington's disease (HD), due to both motor and non-motor confounders. This study thus aimed at (1) profiling apathy in ALS, PD, and HD and (2) exploring its clinical determinants. Materials: Consecutive ALS (N = 99), PD (N = 73), and HD (N = 25) patients underwent a motor-free assessment of apathy (Dimensional Apathy Scale, DAS), global cognition, anxiety and depression. Function was assessed through disease-specific scales. The DAS was also completed by N = 101 healthy controls (HCs). Between-group comparisons on DAS scores were implemented by covarying for all applicable confounders. Predictive models on DAS scores were built through multiple, stepwise regressions. Results: Parkinson's disease and HD, but not ALS, patients were more apathetic than HCs-with HD patients also selectively showing lower initiation and poorer goal-directed planning than HCs. Higher apathetic features were detected in PD and HD as compared to ALS. Education was a protective factor against apathy in ALS. Anxiety was a risk factor for global apathy in ALS, HD, and to a lesser extent, in PD, whereas, protective only toward affective disintegration in PD and ALS. Cognitive inefficiency was a risk factor toward apathy in both PD and ALS. Depression was a risk factor for executive-related apathy in PD. Discussion: This study provides unprecedented insights into the heterogeneous semiology and determinants of apathy across ALS, PD, and HD via the DAS, in turn informing clinical practice and research.

8.
Eur J Neurol ; 29(7): 2006-2014, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35285122

RESUMO

BACKGROUND AND PURPOSE: Cognitive dysfunction has been observed following recovery from COVID-19. To the best of our knowledge, however, no study has assessed the progression of cognitive impairment after 1 year. The aim was to assess cognitive functioning at 1 year from hospital discharge, and eventual associations with specific clinical variables. METHODS: Seventy-six patients (aged 22-74 years) who had been hospitalized for COVID-19 were recruited. Patients received neuropsychological assessments at 5 (n = 76) and 12 months (n = 53) from hospital discharge. RESULTS: Over half (63.2%) of the patients had deficits in at least one test at 5 months. Compared to the assessment at 5 months, verbal memory, attention and processing speed improved significantly after 1 year (all p < 0.05), whereas visuospatial memory did not (all p > 0.500). The most affected domains after 1 year were processing speed (28.3%) and long-term visuospatial (18.1%) and verbal (15.1%) memory. Lower PaO2 /FiO2 ratios in the acute phase were associated with worse verbal long-term memory (p = 0.029) and visuospatial learning (p = 0.041) at 5 months. Worse visuospatial long-term memory at 5 months was associated with hyposmia (p = 0.020) and dysgeusia (p = 0.037). CONCLUSION: Our study expands the results from previous studies showing that cognitive impairment can still be observed after 1 year. Patients with severe COVID-19 should receive periodic cognitive follow-up evaluations, as cognitive deficits in recovered patients could have social and occupational implications.


Assuntos
COVID-19 , Transtornos Cognitivos , Disfunção Cognitiva , Cognição , Transtornos Cognitivos/psicologia , Disfunção Cognitiva/epidemiologia , Disfunção Cognitiva/etiologia , Seguimentos , Humanos , Testes Neuropsicológicos
9.
Exp Brain Res ; 239(7): 2303-2316, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34091696

RESUMO

Motor learning interacts with and shapes experience-dependent cerebral plasticity. In stroke patients with paresis of the upper limb, motor recovery was proposed to reflect a process of re-learning the lost/impaired skill, which interacts with rehabilitation. However, to what extent stroke patients with hemiparesis may retain the ability of learning with their affected limb remains an unsolved issue, that was addressed by this study. Nineteen patients, with a cerebrovascular lesion affecting the right or the left hemisphere, underwent an explicit motor learning task (finger tapping task, FTT), which was performed with the paretic hand. Eighteen age-matched healthy participants served as controls. Motor performance was assessed during the learning phase (i.e., online learning), as well as immediately at the end of practice, and after 90 min and 24 h (i.e., retention). Results show that overall, as compared to the control group, stroke patients, regardless of the side (left/right) of the hemispheric lesion, do not show a reliable practice-dependent improvement; consequently, no retention could be detected in the long-term (after 90 min and 24 h). The motor learning impairment was associated with subcortical damage, predominantly affecting the basal ganglia; conversely, it was not associated with age, time elapsed from stroke, severity of upper-limb motor and sensory deficits, and the general neurological condition. This evidence expands our understanding regarding the potential of post-stroke motor recovery through motor practice, suggesting a potential key role of basal ganglia, not only in implicit motor learning as previously pointed out, but also in explicit finger tapping motor tasks.


Assuntos
Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Humanos , Aprendizagem , Destreza Motora , Paresia/etiologia , Acidente Vascular Cerebral/complicações , Extremidade Superior
10.
J Pediatr Rehabil Med ; 13(3): 255-262, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32716333

RESUMO

PURPOSE: There is a general lack of evidence on the efficacy of rehabilitation training methods after childhood stroke. The aim of the current paper is to provide an example of a multidisciplinary assessment and intensive patient-centered rehabilitation program that was devised following the Clinical Guidelines for Childhood Stroke Diagnosis, Management and Rehabilitation, based on the International Classification of Functioning, Disability and Health. METHOD: The case of a 13-year-old teenager with physical, linguistic, cognitive and emotional impairments after acute ischemic stroke (AIS) in left middle cerebral artery territories is presented and his neurorehabilitation program is described. RESULTS: After an intensive and comprehensive rehabilitation period, the patient showed significant improvement involving language abilities, cognitive flexibility, logical reasoning and motor independence. A 6-month post-stroke follow-up evaluation showed further gains in spontaneous language, improved motivation and collaboration, reduction of impulsiveness and better general motor stability. CONCLUSION: This case highlights how an intensive, patient-centered, interdisciplinary rehabilitation approach can lead to good improvement across different domains, maximizing the spontaneous recovery in children and adolescents after AIS.


Assuntos
Classificação Internacional de Funcionalidade, Incapacidade e Saúde , Equipe de Assistência ao Paciente , Reabilitação do Acidente Vascular Cerebral/métodos , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/psicologia , Adolescente , Terapia Combinada , Humanos , Masculino , Acidente Vascular Cerebral/diagnóstico
11.
Sci Rep ; 10(1): 11112, 2020 07 06.
Artigo em Inglês | MEDLINE | ID: mdl-32632158

RESUMO

Anxiety is a mental state characterized by an intense sense of tension, worry or apprehension, relative to something adverse that might happen in the future. Researchers differentiate aspects of anxiety into state and trait, respectively defined as a more transient reaction to an adverse situation, and as a more stable personality attribute in experiencing events. It is yet unclear whether brain structural and functional features may distinguish these aspects of anxiety. To study this, we assessed 42 healthy participants with the State-Trait Anxiety Inventory and then investigated with MRI to characterize structural grey matter covariance and resting-state functional connectivity (rs-FC). We found several differences in the structural-functional patterns across anxiety types: (1) trait anxiety was associated to both structural covariance of Default Mode Network (DMN), with an increase in dorsal nodes and a decrease in its ventral part, and to rs-FC of DMN within frontal regions; (2) state anxiety, instead, was widely related to rs-FC of Salience Network and of DMN, specifically in its ventral nodes, but not associated with any structural pattern. In conclusion, our study provides evidence of a neuroanatomical and functional distinction between state and trait anxiety. These neural features may be additional markers in future studies evaluating early diagnosis or treatment effects.


Assuntos
Ansiedade/fisiopatologia , Mapeamento Encefálico/métodos , Encéfalo/fisiopatologia , Rede Nervosa/fisiopatologia , Vias Neurais/fisiopatologia , Adulto , Feminino , Humanos , Masculino , Adulto Jovem
12.
Arch Phys Med Rehabil ; 101(8): 1367-1376, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32417441

RESUMO

OBJECTIVE: To analyze the nature of the interaction between motor and language recovery in patients with motor impairment and aphasia following left hemispheric stroke and to investigate prognostic factors of best recovery, that is, the significant recovery of both functions simultaneously. DESIGN: Retrospective cohort study. SETTING: Specialized inpatient rehabilitation facility. PARTICIPANTS: Patients (N=435) with left hemispheric stroke in the postacute phase with motor impairment and aphasia. INTERVENTION: Not applicable. MAIN OUTCOME MEASURE: Patients who reached the minimal clinically important difference in the motor-FIM (M-FIM) were classified as motor responders, patients who reached a significant change in Aachen Aphasia Test were classified as language responders, and patients who reached a simultaneous and significant improvement in both functions were classified as motor and language responders. RESULTS: Of the sample 45% were motor responders, 58% were language responders, and 35% were motor and language responders. Responder groups showed lower motor impairment and less severe aphasia at admission and greater improvement in both functions at discharge compared with nonresponder groups. Premorbid autonomy, dysphagia, apraxia, and number of rehabilitative sessions were also significantly different between groups. A logistic regression model identified M-FIM, repetition abilities, and number of sessions of speech and language therapy as independent predictors of best response (ie, motor and language responders). CONCLUSIONS: This study provides evidence about a possible interaction between motor and language recovery after stroke. The improvement in one function was never associated with deterioration in the other. The results actually suggest a synergic effect between the amelioration of the 2 functions, with an overall increased efficiency when the 2 recovery pathways are combined.


Assuntos
Afasia/reabilitação , Transtornos Motores/reabilitação , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Afasia/etiologia , Afasia/fisiopatologia , Feminino , Humanos , Terapia da Linguagem , Masculino , Pessoa de Meia-Idade , Diferença Mínima Clinicamente Importante , Transtornos Motores/etiologia , Transtornos Motores/fisiopatologia , Modalidades de Fisioterapia , Recuperação de Função Fisiológica , Estudos Retrospectivos , Índice de Gravidade de Doença , Fonoterapia , Acidente Vascular Cerebral/complicações
13.
Clin Neurol Neurosurg ; 181: 7-20, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30965209

RESUMO

Reduplicative paramnesia for places (i.e., the delusional belief that a place has been duplicated or exists in two different locations) is a rare disorder observed in neurological patients. We review the existing literature on the topic, highlighting commonalities and differences among the 51 cases published since the first report in 1903. Our results highlight the combination of multiple factors in the pathogenesis of this monothematic spatial delusion. From a neurological perspective, a crucial role is played by damage to the right frontal and temporal lobe. Deficits of non-verbal memory and executive functions, along with topographical disorientation, appear to be the most common (but, not systematic) cognitive impairments. The clinical picture of the disorder is further complicated by often overlooked psychological and motivational factors. Consequently, the precise neuro-cognitive substrate of this disorder is yet to be described in detail. We stress the need for a more detailed and systematic approach exploiting neurological, neuroimaging, neuropsychological and psychopathological methods. To guide future investigations, we provide clinical- and research-oriented recommendations. Finally, we illustrate the interplay of all above-mentioned factors with a new case report.


Assuntos
Agnosia/patologia , Encéfalo/patologia , Delusões/patologia , Transtornos da Memória/patologia , Idoso , Agnosia/diagnóstico , Mapeamento Encefálico/métodos , Humanos , Masculino , Transtornos da Memória/diagnóstico , Testes Neuropsicológicos
14.
J Cogn Neurosci ; 31(6): 791-807, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30883288

RESUMO

Previous evidence from neuropsychological and neuroimaging studies suggests functional specialization for tools and related semantic knowledge in a left frontoparietal network. It is still debated whether these areas are involved in the representation of rudimentary movement-relevant knowledge regardless of semantic domains (animate vs. inanimate) or categories (tools vs. nontool objects). Here, we used fMRI to record brain activity while 13 volunteers performed two semantic judgment tasks on visually presented items from three different categories: animals, tools, and nontool objects. Participants had to judge two distinct semantic features: whether two items typically move in a similar way (e.g., a fan and a windmill move in circular motion) or whether they are usually found in the same environment (e.g., a seesaw and a swing are found in a playground). We investigated differences in overall activation (which areas are involved) as well as representational content (which information is encoded) across semantic features and categories. Results of voxel-wise mass univariate analysis showed that, regardless of semantic category, a dissociation emerges between processing information on prototypical location (involving the anterior temporal cortex and the angular gyrus) and movement (linked to left inferior parietal and frontal activation). Multivoxel pattern correlation analyses confirmed the representational segregation of networks encoding task- and category-related aspects of semantic processing. Taken together, these findings suggest that the left frontoparietal network is recruited to process movement properties of items (including both biological and nonbiological motion) regardless of their semantic category.


Assuntos
Mapeamento Encefálico , Córtex Cerebral/fisiologia , Julgamento/fisiologia , Movimento/fisiologia , Rede Nervosa/fisiologia , Adulto , Córtex Cerebral/diagnóstico por imagem , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Rede Nervosa/diagnóstico por imagem , Semântica , Adulto Jovem
15.
Clin Rehabil ; 33(5): 885-893, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30672304

RESUMO

OBJECTIVE: The aim of this study was to investigate the efficacy of mirror therapy on upper-limb recovery in early post-stroke patients. DESIGN: Assessor-blinded randomized controlled trial. SETTING: Inpatient rehabilitation clinic. SUBJECTS: A total of 40 patients with upper-limb impairment due to a first-ever ischaemic or haemorrhagic stroke, within four weeks from the cerebrovascular accident. INTERVENTION: The intervention group received mirror therapy, while the control group received sham therapy. During mirror therapy, patients' sound hand was reflected by a mirror. During sham therapy, an opaque surface replaced the mirror-reflecting surface. Both the mirror therapy and sham therapy groups practised their sound hand with exercises, ranging from the simple elbow flexion-extension to complex tasks (e.g. reaching and grasping). Mirror therapy and sham therapy were added to conventional rehabilitation. MAIN MEASURES: Primary outcome includes Fugl-Meyer upper extremity scale. Secondary outcomes include action research arm test (ARAT) and functional independence measure (FIM) scale. Outcomes were measured at the beginning (T0) and end (T1) of the treatment. RESULTS: At baseline, both groups (sham therapy vs. mirror therapy; mean (SD)) were comparable for Fugl-Meyer (30.9 (23.9) vs. 28.5 (21.8)), ARAT (25.1 (25.5) vs. 23.5 (24)) and FIM (71.0 (20.6) vs. 72.9 (17.8)) scores. At the end of the treatment, both groups significantly improved in the Fugl-Meyer (40.6 (21.3) vs. 38.3 (23.4)), ARAT (31.9 (23.0) vs. 30 (24.1)) and FIM (100.3 (21.9) vs. 99.4 (22.6)) scores. However, at T1, no significant difference was observed between the sham therapy and mirror therapy groups, neither for the Fugl-Meyer, nor for ARAT and FIM scores. CONCLUSION: Compared with sham therapy, mirror therapy did not add additional benefit to upper-limb recovery early after stroke.


Assuntos
Hemiplegia/reabilitação , Modalidades de Fisioterapia , Reabilitação do Acidente Vascular Cerebral/métodos , Extremidade Superior/fisiopatologia , Idoso , Avaliação da Deficiência , Feminino , Hemiplegia/fisiopatologia , Humanos , Método Simples-Cego
16.
J Cogn Neurosci ; 31(5): 639-656, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30633600

RESUMO

Individuals learn by comparing the outcome of chosen and unchosen actions. A negative counterfactual value signal is generated when this comparison is unfavorable. This can happen in private as well as in social settings-where the foregone outcome results from the choice of another person. We hypothesized that, despite sharing similar features such as supporting learning, these two counterfactual signals might implicate distinct brain networks. We conducted a neuropsychological study on the role of private and social counterfactual value signals in risky decision-making. Patients with lesions in the ventromedial prefrontal cortex (vmPFC), lesion controls, and healthy controls repeatedly chose between lotteries. In private trials, participants could observe the outcomes of their choices and the outcomes of the unselected lotteries. In social trials, participants could also see the other player's choices and outcome. At the time of outcome, vmPFC patients were insensitive to private counterfactual value signals, whereas their responses to social comparison were similar to those of control participants. At the time of choice, intact vmPFC was necessary to integrate counterfactual signals in decisions, although amelioration was observed during the course of the task, possibly driven by social trials. We conclude that if the vmPFC is critical in processing private counterfactual signals and in integrating those signals in decision-making, then distinct brain areas might support the processing of social counterfactual signals.


Assuntos
Tomada de Decisões/fisiologia , Feedback Formativo , Córtex Pré-Frontal/fisiologia , Comportamento Social , Feminino , Humanos , Aprendizagem , Masculino , Pessoa de Meia-Idade , Córtex Pré-Frontal/patologia , Risco
17.
Artigo em Inglês | MEDLINE | ID: mdl-29804470

RESUMO

OBJECTIVE: The study presents data on the longitudinal administration of the Italian Edinburgh Cognitive and Behavioral ALS Screen (ECAS). We investigated cognitive-behavioral performance in a group of ALS patients over time and the feasibility of repeating the ECAS longitudinally compared with standard neuropsychological tests. Finally, correlations between clinical/genetic and cognitive/behavioral data were considered. METHODS: One hundred and sixty-eight ALS patients were tested at baseline (T0). Among these, 48 patients performed the ECAS after 6 months (T1), 18 patients performed it at T2 (12 months), and five patients were assessed after 24 months (T3). Participants were also administered two cognitive test (FAB; MoCA) and psychological questionnaires (BDI; STAI/Y). The FBI was carried out with caregivers. RESULTS: No cognitive deterioration was found across follow-ups. In contrast, although scores did not change between T0 and T1, scores improved significantly for ECAS Total/ALS Non-specific and Memory domains when the ECAS was repeated on three occasions (T0, T1, T2). Apathy/Inertia was the most common behavioral symptom, but no worsening of behavioral scores was detected over time. After 12-24 months, patients were still able to perform the ECAS in total, in contrast to FAB and MoCA, which were only partially administrable. CONCLUSIONS: The significant improvement of some ECAS scores over time supports the presence of possible practice effects, particularly in the memory domain, highlighting the need to accommodate for these in longitudinal assessments, through healthy controls groups or alternate versions. This work represents the first Italian ECAS follow-up study and confirms ECAS feasibility in patients with increasing physical disability.


Assuntos
Esclerose Lateral Amiotrófica/complicações , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Transtornos Mentais/etiologia , Testes Neuropsicológicos , Idoso , Esclerose Lateral Amiotrófica/epidemiologia , Esclerose Lateral Amiotrófica/genética , Transtornos Cognitivos/epidemiologia , Correlação de Dados , Feminino , Humanos , Itália , Estudos Longitudinais , Masculino , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Estudos Retrospectivos , Inquéritos e Questionários , Fatores de Tempo
18.
Front Psychol ; 9: 450, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29674987

RESUMO

Introduction: The observed association between depressive symptoms and cognitive performances has not been previously clarified in patients with amyotrophic lateral sclerosis (pALS). In fact, the use of cognitive measures often not accommodating for motor disability has led to heterogeneous and not conclusive findings about this issue. The aim of the present study was to evaluate the relationship between cognitive and depressive/anxiety symptoms by means of the recently developed Edinburgh Cognitive and Behavioral ALS Screen (ECAS), a brief assessment specifically designed for pALS. Methods: Sample included 168 pALS (114 males, 54 females); they were administered two standard cognitive screening tools (FAB; MoCA) and the ECAS, assessing different cognitive domains, including ALS-specific (executive functions, verbal fluency, and language tests) and ALS non-specific subtests (memory and visuospatial tests). Two psychological questionnaires for depression and anxiety (BDI; STAI/Y) were also administered to patients. Pearson's correlation coefficient was used to assess the degree of association between cognitive and psychological measures. Results: Depression assessment negatively correlated with the ECAS, more significantly with regard to the executive functions subdomain. In particular, Sentence Completion and Social Cognition subscores were negatively associated with depression levels measured by BDI total score and Somatic-Performance symptoms subscore. Conversely, no significant correlations were observed between depression level and cognitive functions as measured by traditional screening tools for frontal abilities (FAB) and global cognition (MoCA) assessment. Finally, no significant correlations were observed between state/trait anxiety and the ECAS. Discussion and conclusion: This represents the first study focusing on the relationship between cognitive and psychological components in pALS by means of the ECAS, the current gold standard for ALS cognitive-behavioral assessment. If confirmed by further investigations, the observed association between depression and executive functions suggests the need for a careful screening and treatment of depression, to avoid overestimation of cognitive involvement and possibly improve cognitive performances in ALS.

19.
Top Stroke Rehabil ; 24(6): 428-434, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28322130

RESUMO

BACKGROUND: Aphasia is a serious consequence of stroke but aphasics patients have been routinely excluded from participation in some areas of stroke research. OBJECTIVE: To assess the role of specific linguistic and non-verbal cognitive abilities on the short-term motor recovery of patients with aphasia due to first-ever stroke to the left hemisphere after an intensive rehabilitation treatment. METHODS: 48 post-acute aphasic patients, who underwent physiotherapy and speech language therapy, were enrolled for this retrospective cohort-study. Four types of possible predictive factors were taken into account: clinical variables, functional status, language and non-verbal cognitive abilities. The motor FIM at discharge was used as the main dependent variable. RESULTS: Patients were classified as follows: 6 amnestic, 9 Broca's, 7 Wernicke's, and 26 global aphasics. Motor FIM at admission (p = 0.003) and at discharge (p = 0.042), all linguistic subtests of Aachener AphasieTest (p = 0.001), and non-verbal reasoning abilities (Raven's CPM, p = 0.006) resulted significantly different across different types of aphasia. Post-hoc analyses showed differences only between global aphasia and the other groups. A Multiple Linear Regression shows that admission motor FIM (p = 0.001) and Token test (p = 0.040), adjusted for clinical, language, and non-verbal reasoning variables, resulted as independent predictors of motor FIM scores at discharge, while Raven's CPM resulted close to statistical significance. CONCLUSIONS: Motor function at admission resulted as the variable that most affects the motor recovery of post-stroke patients with aphasia after rehabilitation. A linguistic test requiring also non-linguistic abilities, including attention and working memory (i.e. Token test) is an independent predictor as well.


Assuntos
Afasia/etiologia , Afasia/reabilitação , Linguística , Recuperação de Função Fisiológica/fisiologia , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral/complicações , Idoso , Idoso de 80 Anos ou mais , Afasia/classificação , Transtornos Cognitivos/etiologia , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Estudos Retrospectivos , Fonoterapia/métodos
20.
Artigo em Inglês | MEDLINE | ID: mdl-27219526

RESUMO

This study presents the Italian validation of the recently developed Edinburgh Cognitive and Behavioural ALS Screen (ECAS), a short screen for cognitive/behavioural alterations in patients with amyotrophic lateral sclerosis (ALS). We evaluated the psychometric properties of the ECAS Italian version in terms of reliability and convergent validity for both cognitive and behavioural features. Furthermore, we investigated the relationship with affective and clinical variables, in addition to ECAS usability and patients' insight into cognitive/behaviour changes. Finally, correlations between genetic and cognitive/behavioural data were analysed. We recruited 107 patients with ALS. Normative data were collected on 248 healthy subjects. Participants were administered the ECAS and two standard cognitive screening tools (FAB, MoCA), two psychological questionnaires (BDI, STAI/Y) and an ad hoc usability questionnaire. The FBI was also carried out with caregivers. Results showed that the ECAS Italian version discriminated well between patients and controls. The most prevalent deficit occurred in executive functions and fluency. Correlations were observed between the ECAS and standard cognitive screening tools and between the ECAS carer interview and the FBI, supporting its full convergent validity. In conclusion, the ECAS Italian version provides clinicians with a rapid, feasible and sensitive tool, useful to identify different profiles of cognitive-behavioural impairment in ALS.


Assuntos
Esclerose Lateral Amiotrófica/complicações , Transtornos Cognitivos/diagnóstico , Transtornos Cognitivos/etiologia , Transtornos Mentais/diagnóstico , Transtornos Mentais/etiologia , Fatores Etários , Idoso , Esclerose Lateral Amiotrófica/genética , Proteína C9orf72 , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Testes Neuropsicológicos , Proteínas/genética , Psicometria , Reprodutibilidade dos Testes , Estatística como Assunto
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