[Hemispheric functional specialization in motor aphasia. Neurophysiologic findings with computerized electroencephalographic brain mapping during musical and oral sound stimulation. Study of 2 cases]

Author(s): Correia, C. M., Noffs, M. H., de Vincenzo, N. S., de Campos, C. J.

Journal/Book: Arq Neuropsiquiatr. 1995; 53: 88-93.

Abstract: 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.

Note: Especializacao funcional hemisferica na afasia motora. Achados neurofisiologicos ao mapeamento eletrencefalografico computadorizado sob estimulacao sonora musical e verbal. Estudo de dois casos.

Keyword(s): Adult ; Aged ; Alpha Rhythm; Aphasia, Broca etiology; Cerebral Ischemia complications; Cerebral Ischemia diagnosis; Cerebral Ischemia physiopathology; Delta Rhythm; Dichotic Listening Tests; English Abstract; Laterality ; Magnetic Resonance Imaging; Neuropsychological Tests; Tomography, X Ray Computed Acoustic Stimulation; Aphasia, Broca physiopathology; Brain physiopathology; Brain Mapping; Electroencephalography Case Report; Human; Male; Support, Non U.S. Gov't

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