STRATEGIES AND MECHANISMS IN NONSELECTIVE AND SELECTIVE INHIBITORY MOTOR CONTROL
STRATEGIES AND MECHANISMS IN NONSELECTIVE AND SELECTIVE INHIBITORY MOTOR CONTROL
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DOI：
10.1037/0096-1523.21.3.498
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发表时间：
1995-06-01
影响因子：
2.1
通讯作者：
LOGAN, GD
中科院分区：
文献类型：
--
作者：
DEJONG, R;COLES, MGH;LOGAN, GD
运动抑制以3种停止信号范式进行研究，其中停止信号要求抑制任何反应（全部停止），固定的替代反应（停止-改变）或仅选择性抑制其中一种反应（选择性停止）。实验1使用侧化准备电位来区分选择性、中枢和全局外周抑制机制。在停止变化条件下，抑制作用由中枢机制起作用，在其他条件下，抑制作用由外周机制起作用。实验2中对刺激可辨别性的操纵强烈影响选择性运动抑制的速度，证实这种抑制是通过有条件地参与外周机制来实现的。这些结果支持了不同情况下抑制运动控制的不同功能机制和策略的观点。
Motor inhibition was studied in 3 versions of the stop-signal paradigm, with the stop signal requiring inhibition of any response (stop-all), a fixed alternative response (stop-change), or selective inhibition of only 1 of the responses (selective-stop). The lateralized readiness potential was used in Experiment 1 to distinguish between a selective, central, and a global peripheral inhibition mechanism. Inhibition was found to be effected by the central mechanism in the stop-change condition and by the peripheral mechanism in the other conditions. Manipulation of stimulus discriminability in Experiment 2 strongly affected the speed of selective motor inhibition, confirming that such inhibition was achieved by conditionally engaging the peripheral mechanism. These results support the idea that functionally distinct mechanisms and strategies are involved in inhibitory motor control in different situations.