Interactions between cognition and motivation during response inhibition.
Interactions between cognition and motivation during response inhibition.
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DOI：
10.1016/j.neuropsychologia.2009.10.017
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发表时间：
2010-01
期刊：
影响因子：
2.6
通讯作者：
Pessoa L
中科院分区：
文献类型：
--
作者：
Padmala S;Pessoa L
越来越多的研究已经调查了动机如何与特定的认知功能相互作用，包括注意力，工作记忆和其他执行功能。在这些研究中，重点是了解动机如何影响有助于改善行为表现的大脑区域。人们对积极的激励措施实际上如何损害行为表现的了解较少。在这里，我们有兴趣调查奖励可能对行为表现有害的情况。具体来说，我们假设，奖励参与者正确的去会损害停止性能。重要的是，我们假设对抑制的影响是特异性的，也就是说，不仅仅是由于在围棋试验中反应时间的加速。为了研究抑制和动机之间的相互作用，参与者在两种情况下，即，在一个中立的，控制条件和奖励条件，在此期间，他们被奖励正确的去执行停止信号任务。在行为上，参与者在奖励期间表现出较长的停止信号反应时间，这表明在前一种情况下更难抑制他们的反应。神经影像学研究结果显示，许多大脑区域参与了停止信号抑制，通过成功和不成功的停止试验的对比来索引。关键的是，这些区域的一个子集，其中包括右额下回，左中央前回，和双边壳核，表现出显着的抑制条件的相互作用，表明认知和动机信号在抑制控制过程中在大脑中相互作用。
A growing number of studies have investigated how motivation interacts with particular cognitive functions, including attention, working memory, and other executive functions. In these studies, the emphasis has been on understanding how motivation impacts brain regions that contribute to improving behavioral performance. Less is understood about how positive incentives may actually impair behavioral performance. Here, we were interested in investigating a situation in which reward would be potentially deleterious to behavioral performance. Specifically, we hypothesized that rewarding participants for correct going would impair stopping performance. Critically, we hypothesized that the effects on inhibition would be specific, namely, not simply attributable to a speeding-up of reaction time during go trials. To investigate the interaction between inhibition and motivation, participants performed a stop-signal task during two conditions, namely, during a neutral, control condition and during a rewarded condition during which they were rewarded for correct go performance. Behaviorally, participants exhibited longer stop-signal reaction times during the reward relative to the control condition, indicating that it was harder to inhibit their responses during the former condition. Neuroimaging findings revealed that a host of brain regions were involved in stop-signal inhibition, as indexed via the contrast of successful and unsuccessful stop trials. Critically, a subset of these regions, which included the right inferior frontal gyrus, the left precentral gyrus, and bilateral putamen, exhibited significant inhibition by condition interactions, demonstrating that cognitive and motivational signals interact in the brain during inhibitory control.
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影响因子：
2.9
作者：
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