[Hemispheric functional specialization in motor aphasia. Neurophysiologic findings with computerized electroencephalographic brain mapping during musical and oral sound stimulation. Study of 2 cases].
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 (consonant-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 neurophysiological correlates of auditory stimulation and brain electrical activity in aphasia.
Muszkat
M
M
Disciplina de Neurologia, Escola Paulista de Medicina, São Paulo, Brasil.
Correia
C M
CM
Noffs
M H
MH
de Vincenzo
N S
NS
de Campos
C J
CJ
D000161:Acoustic Stimulation; D000328:Adult; D000368:Aged; D000513:Alpha Rhythm; D001039:Aphasia, Broca / Q000209:etiology / Q000503:physiopathology*; D001921:Brain / Q000503:physiopathology*; D002545:Brain Ischemia / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology; D001931:Brain Mapping; D003700:Delta Rhythm; D004007:Dichotic Listening Tests; D004569:Electroencephalography; D007839:Functional Laterality; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009483:Neuropsychological Tests; D014057:Tomography, X-Ray Computed
Especialização funcional hemisférica na afasia motora. Achados neurofisiológicos ao mapeamento eletrencefalográfico computadorizado sob estimulação sonora musical e verbal. Estudo de dois casos.