Proactive adjustments of response strategies in the stop-signal paradigm.
Proactive adjustments of response strategies in the stop-signal paradigm.
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DOI：
10.1037/a0012726
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发表时间：
2009-06
影响因子：
2.1
通讯作者：
Logan, Gordon D.
中科院分区：
文献类型：
--
作者：
Verbruggen, Frederick;Logan, Gordon D.
在停止信号范式中，快速反应比缓慢反应更难抑制，因此受试者必须平衡前进任务中的速度和停止任务中的成功停止。从理论上讲，受试者通过调整行动任务的反应阈值来实现这种平衡，并根据指示可能发生的相关停止信号进行主动调整。我们报告了五个实验，测试这一理论主张，提出线索，表明是否停止信号是相关的，为接下来的几次试验。受试者在每个实验中主动调整反应策略：扩散模型拟合显示，当受试者预期停止信号发生时，反应阈值增加，减缓了反应并提高了准确性。此外，我们的研究结果表明，受试者可以在逐个试验的基础上进行主动的反应策略调整，这表明一个灵活的认知系统可以在不断变化的环境中主动调整自己。
In the stop-signal paradigm, fast responses are harder to inhibit than slow responses, so subjects must balance speed on the go task with successful stopping in the stop task. In theory, subjects achieve this balance by adjusting response thresholds for the go task, making proactive adjustments in response to instructions that indicate that relevant stop signals are likely to occur. We report five experiments that tested this theoretical claim, presenting cues that indicated whether or not stop signals were relevant for the next few trials. Subjects made proactive response-strategy adjustments in each experiment: diffusion-model fits showed that response threshold increased when subjects expected stop signals to occur, slowing go responses and increasing accuracy. Furthermore, our results show that subjects can make proactive response-strategy adjustments on a trial-by-trial basis, suggesting a flexible cognitive system that can proactively adjust itself in changing environments.
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影响因子：
--
作者：
LAPPIN, JS;ERIKSEN, CW
通讯作者：
ERIKSEN, CW
影响因子：
4.1
作者：
GRATTON, G;COLES, MGH;DONCHIN, E
通讯作者：
DONCHIN, E
影响因子：
2.4
作者：
Brown, Scott W.
通讯作者：
Brown, Scott W.
影响因子：
2.3
作者：
Kleinsorge, T
通讯作者：
Kleinsorge, T
影响因子：
8.2
作者：
Logan, GD;Schachar, RJ;Tannock, R
通讯作者：
Tannock, R