Temporal dynamics of motivation-cognitive control interactions revealed by high-resolution pupillometry.
Temporal dynamics of motivation-cognitive control interactions revealed by high-resolution pupillometry.
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DOI：
10.3389/fpsyg.2013.00015
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发表时间：
2013
影响因子：
3.8
通讯作者：
Braver TS
中科院分区：
文献类型：
--
作者：
Chiew KS;Braver TS
动机操纵，例如与绩效相关的奖励激励的存在，可以对认知控制产生重大影响。以前的证据表明，奖励激励可能会提高认知表现，特别是通过增加准备，或主动，控制过程。本研究采用高分辨率瞳孔测量法，考察了奖励对AX-连续执行任务（AX-CPT）中认知控制动力学的影响。在AX-CPT中，为了适当地响应模糊的目标探测器，必须在延迟期间积极地维持上下文线索。该任务的一个关键特征是，它允许对准备性、主动性控制过程进行可分离的表征（即，上下文的利用）和反应性控制过程（即，目标诱发干扰分辨率）。任务绩效档案表明，奖励激励措施增强主动控制（上下文利用）。至关重要的是，瞳孔放大也增加了奖励激励试验在上下文维护期间，这表明试验特定的主动控制的转变，特别是当上下文线索表明需要克服占主导地位的目标反应偏差。奖励激励既有短暂的（即，一次又一次的审判）和维持（即，基于块的）对瞳孔扩张的影响，这可以反映不同的潜在过程。短暂的瞳孔效应存在，即使在任务表现相匹配的试验相比，这表明一个独特的激励影响的奖励激励。这些结果表明，瞳孔测量可能是一个有用的技术，调查奖励动机信号及其对认知控制的动态影响。
Motivational manipulations, such as the presence of performance-contingent reward incentives, can have substantial influences on cognitive control. Previous evidence suggests that reward incentives may enhance cognitive performance specifically through increased preparatory, or proactive, control processes. The present study examined reward influences on cognitive control dynamics in the AX-Continuous Performance Task (AX-CPT), using high-resolution pupillometry. In the AX-CPT, contextual cues must be actively maintained over a delay in order to appropriately respond to ambiguous target probes. A key feature of the task is that it permits dissociable characterization of preparatory, proactive control processes (i.e., utilization of context) and reactive control processes (i.e., target-evoked interference resolution). Task performance profiles suggested that reward incentives enhanced proactive control (context utilization). Critically, pupil dilation was also increased on reward incentive trials during context maintenance periods, suggesting trial-specific shifts in proactive control, particularly when context cues indicated the need to overcome the dominant target response bias. Reward incentives had both transient (i.e., trial-by-trial) and sustained (i.e., block-based) effects on pupil dilation, which may reflect distinct underlying processes. The transient pupillary effects were present even when comparing against trials matched in task performance, suggesting a unique motivational influence of reward incentives. These results suggest that pupillometry may be a useful technique for investigating reward motivational signals and their dynamic influence on cognitive control.
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影响因子：
3.2
作者：
Padmala S;Pessoa L
通讯作者：
Pessoa L
积极影响与奖励：情感和动机对认知控制的影响。
影响因子：
3.8
作者：
Chiew KS;Braver TS
通讯作者：
Braver TS
影响因子：
3.7
作者：
Granholm, E;Asarnow, RF;Dykes, KL
通讯作者：
Dykes, KL
影响因子：
4.6
作者：
MacDonald, AW;Carter, CS
通讯作者：
Carter, CS
影响因子：
5.4
作者：
COHEN, JD;SERVANSCHREIBER, D
通讯作者：
SERVANSCHREIBER, D