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On the Visually Evoked Potentials in the Cerebral Visual, Somatosensory, Motor and Association Areas of Monkeys (Maraca Cyclopis)


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Title: On the Visually Evoked Potentials in the Cerebral Visual, Somatosensory, Motor and Association Areas of Monkeys (Maraca Cyclopis)
Authors: Ochi, Nobuya
Authors (alternative): 越智, 伸弥
Issue Date: 25-Mar-1968
Citation: Acta medica Nagasakiensia. 1968, 12(3-4), p.61-82
Abstract: Seventeen unanesthetized monkeys (sixteen macaca cyclopis and one macaca mulatta) were immobilized by galamine triiodoethylate (Flaxedil) and masspotentials (EEG and evoked potentials) before and during flashing light stimulation to atropinized eyes were led by grosselectrodes from the cerebral visual (occipital cortex), association (superior and inferior parietal, superior frontal cortex), motor and somatosensory areas. Simultaneously, masspotentials of six loci and one tracing of stimulation signals were recorded onto 1/4 inch magnetic tape. These magnetic records were fed into the computer (ATAC-401 or ATAC-501-20) and summation average evoked potentials and autocorrelograms of background EEG were obtained. It was found that there were the following three response components in the visually evoked potentials of the cerebral visual area, i. e. (i) sharp or relatively sharp initial biphasic positive-negative deflections (P1 N1 , P2 N2 , P3 N3, etc.) , (ii) late biphasic slow components (p1 n1 , p2 n2, p3 n3) and (iii) wavelets superimposed on the sharp or relatively sharp deflections and sometimes on the late slow components. Similar response components were also observed in areas other than the visual area.
URI: http://hdl.handle.net/10069/15528
ISSN: 00016055
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 12, No. 3-4

Citable URI : http://hdl.handle.net/10069/15528

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