ABSTRACT
RESUMO Objetivo Comparar os resultados nas tarefas de nomeação de pacientes afásicos após AVC dos grupos ativo e controle. Método Estudo duplo-cego, randomizado controlado com 14 pacientes. Os indivíduos foram submetidos a cinco sessões de 20 minutos de 2 mA em dias consecutivos. O catodo foi posicionado na área homóloga à Broca e o anodo sobre a região supraorbital do hemisfério esquerdo. Os testes de Boston e Snodgrass foram aplicados e os resultados comparados entre os grupos. Resultados Não houve resultados significativos para as sequências 1 e 2 no teste do Snodgrass. No teste de Boston, os dados indicaram uma diferença significativa para o tempo médio de acertos com estratégia. Conclusão Os resultados sugerem que a ETCC simultânea (anódica e catódica) é um método que pode auxiliar a reabilitação de pacientes com afasia do tipo anômica e de Broca, após AVC, e que as estratégias linguísticas deveriam ser consideradas nas análises das respostas dos testes de nomeação.
ABSTRACT Purpose Compare the results in naming tasks of after-stroke aphasic individuals divided into active and placebo groups pre- and post-transcranial direct current stimulation. Methods A double-blind, randomized, controlled study conducted with 14 individuals. Patients underwent five 20-min sessions with stimulation of 2mA's on consecutive days. The cathode was placed over the Broca's homologous area and the anode was placed over the supraorbital region of the left hemisphere. Boston and Snodgrass naming tasks were assessed before and after the stimulation sessions and the results were compared between the groups. Results No significant results were observed for sequences 1 and 2 in the Snodgrass test. The Boston test results indicated significant difference related to mean time for correct responses with strategy. Conclusion The results suggest that simultaneous transcranial direct current stimulation (anodic and cathodic) is a method that can improve the rehabilitation of patients with anomic and Broca's aphasia after stroke, and that language strategies should be considered in the analysis of naming task responses.
Subject(s)
Humans , Male , Female , Adolescent , Adult , Aged , Aged, 80 and over , Young Adult , Aphasia, Broca/therapy , Transcranial Direct Current Stimulation , Stroke Rehabilitation/methods , Language Tests , Aphasia, Broca/etiology , Aphasia, Broca/rehabilitation , Placebos , Speech Production Measurement , Double-Blind Method , Statistics, Nonparametric , Stroke/complications , Middle AgedABSTRACT
ABSTRACT CONTEXT AND OBJECTIVE: Patients undergoing the same neuromodulation protocol may present different responses. Computational models may help in understanding such differences. The aims of this study were, firstly, to compare the performance of aphasic patients in naming tasks before and after one session of transcranial direct current stimulation (tDCS), transcranial magnetic stimulation (TMS) and sham, and analyze the results between these neuromodulation techniques; and secondly, through computational model on the cortex and surrounding tissues, to assess current flow distribution and responses among patients who received tDCS and presented different levels of results from naming tasks. DESIGN AND SETTING: Prospective, descriptive, qualitative and quantitative, double blind, randomized and placebo-controlled study conducted at Faculdade de Ciências Médicas da Santa Casa de São Paulo. METHODS: Patients with aphasia received one session of tDCS, TMS or sham stimulation. The time taken to name pictures and the response time were evaluated before and after neuromodulation. Selected patients from the first intervention underwent a computational model stimulation procedure that simulated tDCS. RESULTS: The results did not indicate any statistically significant differences from before to after the stimulation.The computational models showed different current flow distributions. CONCLUSIONS: The present study did not show any statistically significant difference between tDCS, TMS and sham stimulation regarding naming tasks. The patients'responses to the computational model showed different patterns of current distribution.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Young Adult , Aphasia/rehabilitation , Stroke/complications , Transcranial Magnetic Stimulation , Transcranial Direct Current Stimulation , Stroke Rehabilitation/methods , Aphasia/etiology , Double-Blind Method , Prospective Studies , Treatment OutcomeABSTRACT
OBJETIVO: apresentar estudo sobre a compreensão de linguagem em sujeitos disártricos. MÉTODO: estudo retrospectivo, descritivo, de caráter qualitativo e quantitativo com 60 sujeitos com idade entre 40 a 70 anos. Foi realizado o cruzamento das tarefas de compreensão do protocolo Montreal Toulouse (versão alfa): compreensão de palavras orais (CPO) e escritas (CPE); frases simples orais (CFSO) e escritas(CFSE); frases complexas orais (CFCO) e escritas (CFCE). RESULTADOS: com respeito à comparação entre a compreensão oral e a escrita, quanto maior a CPO maior a CPE; quanto maior a CFSO, maior CFSE e vice-versa; relativamente à compreensão oral e escrita, quanto maior a CP, maior CF; quanto maior a CFS, maior CFC e vice-versa; em relação à comparação de idade, gênero, e CFCO e CFCE, não se observa relações significativas. CONCLUSÃO: nos pacientes deste estudo, verificou-se que a compreensão das estruturas mais simples favorece a compreensão das mais complexas; a dificuldade de compreensão de estruturas simples apresenta relação direta com a dificuldade de compreensão de estruturas complexas.
PURPOSE: to study language comprehension in dysarthric subjects. METHOD: a retrospective, descriptive and qualitative-quantitative study involving 60 subjects, age ranging from 40-70 years. Data crossing was carried out including sub-tests of comprehension related to: spoken words (SWC), written words (WWC), spoken simple phrases (SSPC), written simple phrases (WSPC), spoken complex phrases (SCPC) and written complex phrases (WCPC). RESULTS: the higher the SWC, the higher the WWC; the higher the SSPC, the higher the WSPC, and vice-versa; the higher the WC, the higher the PC; the higher the SPC, the higher the CPC, and vice-versa. No associations with age, gender, SCPC and WCPC were observed. CONCLUSION: both comprehension and difficulty in comprehension are associated with the degree of complexity of linguistic structure.