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ID 19547
Eprint ID
19547
フルテキストURL
Thumnail 68_911.pdf 9.27 MB
タイトル(別表記)
Physiological and histological study on the different extension of the motor cortex of the brain Part Ⅱ. On the motor cortex of the monkey brain
著者
道中 智勝 岡山大学医学部第一(陣内)外科教室
抄録
The same method of investigation as stated in part Ⅰ was used on 4 cases of the monkey brain (Macaca muletta). 1) The extent of the center for the hind limb responded to electric stimulation was almost as same as or a little narrower than the extent with the Betz cells, while the extent of the center for the fore limb was much wider than the extent with the Betz cells. 2) The extent with motor response first appeared like islands at the threshold voltage, became larger as the voltage increased and then the extents for the upper and lower limbs became doubled, thus making the mixed area. 3) This enlargement of the mixed area by increased stimulation had a tendency to move towards the center for the lower limb. 4) The threshold of stimulation was the lowest at the center for the upper limb, then at that for the lower limb, and the highest at the mixed area. And even in the same center, the threshold was lower at the central part with more Betz cells and higher at the peripheral part with less Betz cells. From these facts, it would appear that the extent of the motor cortex determined physiologically is not always the same as the extent of the distribution of the Betz cells, but is due to the density and sensitivity of the original nerve cells of the pyramidal tract, regardless of the size of the cells.
発行日
1956-07-31
出版物タイトル
岡山医学会雑誌
出版物タイトル(別表記)
Journal of Okayama Medical Association
68巻
7号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
911
終了ページ
933
ISSN
0030-1558
NCID
AN00032489
資料タイプ
学術雑誌論文
オフィシャル URL
https://www.jstage.jst.go.jp/article/joma1947/68/7/68_7_911/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/
言語
Japanese
著作権者
岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma