Neural mechanisms of ipsilateral and contralateral hand movements in monkeys

2015 Fiscal Year Final Research Report

• Project/Area Number: 25780453
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Experimental psychology
• Research Institution: Tokyo Metropolitan Institute of Medical Science
• Principal Investigator: NAKAYAMA Yoshihisa 公益財団法人東京都医学総合研究所, 認知症・高次脳機能研究分野, 主席研究員 (30585906)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 補足運動野 / 帯状皮質運動野 / 両手動作 / 単一ニューロン / 局所場電位

Outline of Final Research Achievements

To specify roles of higher-order motor areas in controlling hand movements, we recorded neuronal activity and local field potentials (LFPs) from macaques while they performed a button-press task with the right or left hand. We found that the caudal cingulate motor area (CMAc) controls contralateral and ipsilateral hand movements in a counterbalanced fashion, whereas the supplementary motor area (SMA) preferentially controls contralateral hand movements. We also found that the rostral cingulate motor area (CMAr) and pre-supplementary motor area (pre-SMA) are more involved in sequential movements than CMAc and SMA.

Free Research Field

認知神経科学