Transcranial Direct Current Stimulation improves word production in Conduction Aphasia: Electroencephalographic and behavioral evidences

Autor: Alberto Domínguez, Jesus LLabres, Rosario Socas, Enrique Enriquez, Nieves Mª León, Hipólito Marrero
Rok vydání: 2014
Předmět:
Zdroj: International Journal of Clinical and Health Psychology. 14:240-245
ISSN: 1697-2600
Popis: A Conduction Aphasic patient, RH, with many difficulties at the level of phonological output, was subjected to Transcranial Direct Current Stimulation (tDCS) therapy six months after suffering a stroke. Fifteen daily sessions were administered (five days per week). The treatment led to a better intra-hemispheric electrical coherence and inter-hemispheric balance, as shown by the quantitative EEG analysis. Transcranial Direct Current Stimulation therapy was shown to be effective in inhibiting irregular activation of the right hemisphere, offering the healthy areas of the left hemisphere the possibility of reassuming their linguistic processing abilities. Also, the number of errors in picture naming and repetition of words and pseudowords dropped considerably following treatment. The recovery was greater for long stimuli and was not affected by semantic or lexical variables such as familiarity. These results suggest that the Phonological Output Buffer, a mechanism dedicated to the maintenance, ordering and production of phoneme strings, was the processing stage modified by the treatment.
Databáze: OpenAIRE