栂指の空間認知特性に関する大脳半球優位性と脊髄運動細胞興奮性

托加手指空间认知特征的大脑半球优势和脊髓运动细胞兴奋性

• 批准号: 05680093
• 负责人: 今中 國泰
• 金额: $ 0.9万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680093/
• 关键词: 空間認知; 大脳半球優位性; 脊髄運動細胞興奮性; 位置決め動作; 注意; H反射; 脳緩電位

運動機能の大脳半球優位性は,右脳は空間的(Carsonら,1990),左脳は時系列的(Truman&Hamond,1990)課題に優位性を示すことが認められている。この大脳半球優位性は,左右の手が対側大脳半球によって支配されるとする交叉性神経支配(神経構造モデル)だけでなく,大脳半球の反対側空間への交叉性注意機能(注意モデル)からも解釈されるようになってきている。本研究では,栂指の位置決め動作パフォーマンスに対して解剖学的な交叉性神経支配(手の左右差)あるいは空間への注意機構としての交叉性支配(動作空間の左右差)のどちらによって半球優位性が示されるのかを実験的に検討した。動作空間は身体正面での栂指動作を左右90°頭部回旋位条件下で行わせる方法で規定した。運動課題は左右の栂指による位置決め再生で,その正確性と偏向性を検討した。その結果,栂指動作の方向が頭部回旋方向と一致する場合はundershoot,逆方向ではovershootといった傾向が左右いずれの栂指動作にも顕著に観察された(Brain&Cognitionへ投稿中)。さらに,頭部回旋に伴う頸部筋群や前庭器官からの感覚入力による脊髄運動細胞興奮性の影響を検討するため,栂指筋群の随意収縮(10%MVC)中に誘発したH反射を左右頭部回旋について観察したが,頭部回旋のH反射への影響はほとんど認められなかった(Neuropsychologia,印刷中)。したがって,顕著なundershoot‐overshoot傾向には大脳半球の交叉性注意機構が関与している可能性が残されているが,これに関しては,左右頭部回旋位条件下での反応時間課題を用いて左右大脳半球の緩電位(DC成分,CNV)の頭皮上分布を検討してきたが,これまでに得られた結果には個人差が大きくあらわれ,未だ結論を出すには至っていない。現在,さらに被験者数を増やして実験を継続しているところである。

Mobile phones can increase hemispheric positioning, right-hand space (Carson, 1990) and left-hand series (Truman&Hamond,1990). In order to increase the position of the hemispheres, the left and right hands are in control of the hemispheres, the intersecting divinity of the hemispheres, and the attention mechanism of the space communication in the hemispheres. The purpose of this study is to refer to the cross divine domination of the anatomy (the difference between the left and the right of the hand) and the cross control of the space (the difference between the left and right of the motor space). This study refers to the cross control of the anatomy of the brain (the difference between the left and right of the hand). The front of the body in the action space refers to the regulation of the operation method under the condition of 90 °rotation between the left and right sides of the action. The right and right side of the motion problem means that the location of the device is determined to regenerate, and that the bias is correct. The results show that the direction of the action is consistent with the direction of the undershoot, and that the direction of the action is the same as that of the undershoot, and that the direction of the action is in the same direction as the undershoot, and the reverse direction is in the right and left direction (in the contribution of Brain&Cognition). The left and right sides of the left and right sides of the finger muscles in the 10%MVC, the left and right sides of the muscles, the left and right sides, the left and right sides of the tendons (Neuropsychologia, printing). In order to solve the problem of reverse response time in the left and right hemispheres under the condition of the rotation position of the left and right hemispheres, it is necessary to use the electrical potential (DC component, CNV) of the left and right hemispheric hemispheres to pay attention to the possibility that the left and right hemispheres intersect. The results show that there is a big difference in the number of people, but there is no conclusion that there is a difference in the results. Now, the number of people who have been killed is very low.

项目成果

Imanaka,K.,Funase,K.,&Nishihira,Y.: "Reconsidering the 90°head-rotation paradigm used in neuropsychological research:Are there reflexive rather than hemispatial effects?" Neuropsychologia. 32(in press). (1994)

Imanaka, K.、Funase, K. 和 Nishihira, Y.：“重新考虑神经心理学研究中使用的 90° 头部旋转范式：是否存在反射效应而不是半空间效应？”32（出版中）。

Funase,K.,Imanaka,K.,&Nishihira,Y.: "Excitability of tne soleus motoneuron pool revealed by the develop-mental slope of H-reflex as reflex gain" Electromyography and Clinical Neurophysiology. (in press). (1994)

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Imanaka K.& Abernethy B.: "Interference between location and distance information in motor short term memory : The respective roles of direct kinesthetic signals ..." Journal of Motor Behavior. 24. 274-280 (1992)

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