Department of Psychology, University of Utah, Salt Lake City, Utah.
Psychophysiology. 2018 Mar;55(3). doi: 10.1111/psyp.12805. Epub 2017 Mar 15.
The present study investigated individual differences in information processing following errant behavior. Participants were initially classified as high or as low working memory capacity using the Operation Span Task. In a subsequent session, they then performed a high congruency version of the flanker task under both speed and accuracy stress. We recorded ERPs and behavioral measures of accuracy and response time in the flanker task with a primary focus on processing following an error. The error-related negativity was larger for the high working memory capacity group than for the low working memory capacity group. The positivity following an error (Pe) was modulated to a greater extent by speed-accuracy instruction for the high working memory capacity group than for the low working memory capacity group. These data help to explicate the neural bases of individual differences in working memory capacity and cognitive control.
本研究考察了错误行为后的信息处理个体差异。参与者最初使用操作Span 任务分为高或低工作记忆容量组。在随后的一个环节中，他们在速度和准确性压力下执行了高一致性的侧抑制任务。我们记录了侧抑制任务中的 ERPs 和准确性及反应时的行为测量，主要关注错误后的处理。高工作记忆容量组的错误相关负波比低工作记忆容量组更大。对于高工作记忆容量组，错误后正波（Pe）比低工作记忆容量组更容易受到速度-准确性指令的调节。这些数据有助于阐明工作记忆容量和认知控制个体差异的神经基础。
