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首页> 外文期刊>Journal of Cognitive Neuroscience >The Neurophysiology of Response Competition: Motor Cortex Activation and Inhibition following Subliminal Response Priming
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The Neurophysiology of Response Competition: Motor Cortex Activation and Inhibition following Subliminal Response Priming

机译：反应竞争的神经生理学：阈下响应启动后运动皮层的激活和抑制。

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Some widely used tasks in cognitive neuroscience depend on the induction of a response conflict between choice alternatives, involving partial activation of the incorrect response before the correct response is emitted. Although such "conflict tasks" are often used to investigate frontal-lobe-based conflict-monitoring processes, it is not known how response competition evolves in the motor cortex. To investigate the dynamics of motor cortex activation during response competition, we used a subliminal priming task that induced response competition while bypassing preresponse stage processing conflict. Analyses of movement- related EEG potentials supported an interaction between competing responses characterized by reciprocal inhibition. Inhibitory interactions between response channels contribute to the resolution of response conflict. However, the reciprocal inhibition at motor cortex level seemed to operate independent of higher level conflict-monitoring processes, which were relatively insensitive to response conflict induced by subliminal priming. These results elucidate how response conflict causes interference as well as the conditions under which frontal-lobe-based interference control processes are engaged.
机译：认知神经科学中一些广泛使用的任务取决于选择替代方案之间的响应冲突，包括在发出正确响应之前部分激活错误响应。尽管此类“冲突任务”通常用于研究基于额叶的冲突监控过程，但尚不清楚反应竞争如何在运动皮层中发展。为了调查反应竞争过程中运动皮层激活的动力学，我们使用了阈下启动任务，该任务引发了反应竞争，同时绕过了反应前阶段的处理冲突。与运动有关的脑电势分析支持以相互抑制为特征的竞争反应之间的相互作用。响应通道之间的抑制性相互作用有助于解决响应冲突。然而，运动皮层水平的相互抑制似乎独立于较高水平的冲突监测过程而起作用，该过程对阈下启动引发的反应冲突相对不敏感。这些结果阐明了响应冲突是如何引起干扰的，以及采用基于前叶的干扰控制过程的条件。

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