Montanari Roberto, Giamundo Margherita, Brunamonti Emiliano, Ferraina Stefano, Pani Pierpaolo
Department of Physiology and Pharmacology, Sapienza University, Rome, Italy.
Department of Human Sciences, Università Europea di Roma, Via degli Aldobrandeschi, 190, 00163, Rome, Italy.
Exp Brain Res. 2017 Jul;235(7):2203-2214. doi: 10.1007/s00221-017-4961-0. Epub 2017 Apr 24.
We investigated how the ability to suppress an impending movement is affected by the visual salience of the stop-signal in a reaching countermanding task. We found that when the stop-signal was easy to detect, stop performance was better than when the stop-signal was difficult to detect. In an exploratory analysis, we also found that the change in salience of the stop-signal can have an effect on the speed of response in trials following the stop-signal. This effect occurred together with strategic slowing down after an error in inhibiting was committed and together with a repetition priming effect due to the stop-signal presented in the previous trial. Our results suggest the need to investigate more in depth the afferent processing stage of the inhibitory control of movement and how task demands can affect its functioning.
我们在一项伸手取消任务中研究了抑制即将发生的动作的能力是如何受到停止信号的视觉显著性影响的。我们发现，当停止信号易于检测时，停止表现比难以检测时更好。在一项探索性分析中，我们还发现，停止信号显著性的变化会对停止信号之后试验中的反应速度产生影响。这种效应与抑制错误后策略性的反应减慢以及前一次试验中出现的停止信号所导致的重复启动效应同时出现。我们的结果表明，需要更深入地研究运动抑制控制的传入处理阶段以及任务需求如何影响其功能。
