Arquivos de Neuro-Psiquiatria
Print version ISSN 0004-282X
MUSZKAT, Mauro et al. Functional brain asymmetry in motor aphasia during auditory stimulation: report of two cases. Arq. Neuro-Psiquiatr. [online]. 1995, vol.53, n.1, pp. 88-93. ISSN 0004-282X. http://dx.doi.org/10.1590/S0004-282X1995000100014.
This study concerns about brain electrical activity during auditory stimulation in 2 aphasic patients, one with classical (left hemisphere lesion) and another with cross aphasia (right hemisphere lesion). Both cases were submitted to dichotic listening test (consonat-vowel-consonant task) and music audition (gregorian chant), during brain mapping examination. We found, in both cases, a great proportion in delta frequency and power in non-lesional hemisphere during dichotic and musical stimulation. Besides, increasing in frequency of alpha activity was observed only in the non-lesional hemisphere restricted to temporal lobe region. Such findings suggest an interesting field of research about measurements of neurophysiologies correlates of auditory stimulation and brain electrical activity in aphasia.
Keywords : functional brain asymmetry; aphasia; computerized electroencephalographic mapping.