DSpace university logo mark
詳細検索
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > 030 医学部 > 030 紀要 > Acta Medica Nagasakiensia > Volume 13, No. 3-4 >

Effect of Lesion of the Lateral Geniculate Body on the EEGs and Photically Evoked Potentials in the Cerebral Visual, Somatosensory and Association Areas of Unanesthetized Cat


ファイル 記述 サイズフォーマット
acta13_03_09_t.pdf2.35 MBAdobe PDF本文ファイル

タイトル: Effect of Lesion of the Lateral Geniculate Body on the EEGs and Photically Evoked Potentials in the Cerebral Visual, Somatosensory and Association Areas of Unanesthetized Cat
著者: Ishino, Toru
著者(別表記) : 石野, 徹
発行日: 1969年 3月25日
引用: Acta medica Nagasakiensia. 1969, 13(3-4), p.228-261
抄録: Visually evoked potentials and background EEGs in the cerebral visual, somatosensory, and association areas (lateral suprasylvian gyrus), as well as in the lateral geniculate body (GL) and mesencephalic reticular formation were studied before and after unilateral destruction of the GL of unanesthetized cat. Autocorrelograms and power spectra of background EEGs in various areas mainly showed activities of less than 5 c/s. Unilateral GL destruction caused considerable depression of the ipsilateral EEG activities and mild depression in the contralateral EEGs in most regions except the somatosensory area, where some augmentation was observed. Unilateral putamen destruction resulted in augmented EEG activities in various areas. GL activity seemed to augment EEG activities in the cerebral visual and association areas, while it seemed to depress the activity in the somatosensory area. Summation average of evoked potentials in the association area likewise manifested quite similar diphasic deflections within 130 msec after flashing light stimulus. The initial positive deflection P1 led bipolarily in the medial visual association area was found to be longer in duration than in the medial visual area. Peak latencies of the second positive-negative deflection (P2N2) and third positive deflection P3 in the association area were about 10 msec longer than those in the visual area and this was proven to be statistically significant. Amplitudes of the initial and second diphasic deflections in the medial visual area were higher than those in the posterior visual and medial association areas, whereas amplitudes of the third and fourth deflections in the medial visual area were lower than those in the association area. Almost complete destruction of the GL resulted in disappearance of the initial and succeeding diphasic deflections, and there remained a slow negative wave with a crest at about 70 msec after the flashing stimulus which presumably had been masked by the above deflections prior to GL
URI: http://hdl.handle.net/10069/15550
ISSN: 00016055
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:Volume 13, No. 3-4

引用URI : http://hdl.handle.net/10069/15550

このリポジトリに保管されている文献はすべて著作権により保護されています。
印刷やダウンロード等データの複製は、調査研究・教育または学習を目的とする場合に限定されます。

 

Valid XHTML 1.0! Copyright © 2006-2015 長崎大学附属図書館 - お問い合わせ Powerd by DSpace