Temporal and spectral dynamics underlying cognitive control modulated by task-irrelevant stimulus-response learning
Temporal and spectral dynamics underlying cognitive control modulated by task-irrelevant stimulus-response learning
复制标题
与任务无关的刺激反应学习调节认知控制的时间和光谱动态
DOI：
10.3758/s13415-016-0469-5
复制
发表时间：
2017-02-01
影响因子：
2.9
通讯作者：
Wang, Ling
中科院分区：
文献类型：
--
作者：
Cao, Yanan;Cao, Xiangyi;Wang, Ling
行为学和最近的神经影像学研究结果表明，由于操纵比例一致性（PC），这表明任务无关的刺激反应（S-R）协会的干扰效应的逆转加强，并适用于预测反应。然而，目前还不清楚如何加强S-R协会在大脑中的代表和应用。我们调查了一个主题间的PC范式的对冲和马什任务，使用脑电图（EEG）。行为学结果显示，冲突效应的逆转，这表明任务无关的S-R协会被加强，并用于准备的反应。脑电结果显示，在额中央N2和顶叶P3 b振幅的冲突效应的PC相关的逆转。时频分析表明，更明显的PC相关的逆转的冲突效应在θ波段（4-8赫兹）活动在额中央网站。这些结果表明，由于PC操作增强S-R协会调制的认知控制。重要的是，偏侧化准备电位的幅度在高PC条件下比在低PC条件下更高，这表明，强化的短期记忆空间S-R关联调制认知控制类似于长期记忆空间S-R关联。
Behavioral and recent neuroimaging findings have shown reversal of interference effects due to manipulating proportion congruency (PC), which suggests that task-irrelevant stimulus-response (S-R) associations are strengthened and applied to predict responses. However, it is unclear how the strengthened S-R associations are represented and applied in the brain. We investigated with a between-subjects PC paradigm of the Hedge and Marsh task using electroencephalography (EEG). The behavioral results showed the reversal of the conflict effects, suggesting that task-irrelevant S-R associations were strengthened and used to prepare responses. The EEG results revealed the PC-related reversal of the conflict effects in the frontocentral N2 and parietal P3b amplitudes. Time-frequency analyses showed more pronounced PC-related reversal of the conflict effects in theta band (4–8 Hz) activity in frontocentral sites. These results suggest that the strengthened S-R associations due to PC manipulation modulated cognitive control. Importantly, the amplitude of lateralized readiness potential was higher in the high-PC condition than in the low-PC condition, suggesting that the strengthened short-term-memory spatial S-R associations that modulated cognitive control were applied similarly to long-term-memory spatial S-R associations.