When in doubt, do it both ways: Brain evidence of the simultaneous activation of conflicting motor responses in a spatial Stroop task
When in doubt, do it both ways: Brain evidence of the simultaneous activation of conflicting motor responses in a spatial Stroop task
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DOI：
10.1162/08989290152001934
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发表时间：
2001-05-01
影响因子：
3.2
通讯作者：
Gratton, G
中科院分区：
文献类型：
--
作者：
Desoto, MC;Fabiani, M;Gratton, G
反应竞争通常被认为是对物理和语义信息冲突的刺激的延迟反应的重要贡献者（“Stroop”效应）。反应竞争意味着与正确和不正确反应相关的大脑区域（例如，左和右运动皮层）应该在冲突条件下被同时激活。然而，目前几乎没有这种现象的直接证据，部分原因是缺乏大脑成像技术，可以独立地监测相邻大脑区域（如运动区）激活的时间过程。在本研究中，我们表明，事件相关的光信号（EROS）可以提供这些类型的数据。结果证实了预测，冲突的审判引起同时激活的两个运动皮层，而非冲突的审判引起大脑活动，只有在对侧运动皮层。这些数据支持人类信息处理系统的平行视图。
Response competition is often considered an important contributor to the delayed reaction to stimuli for which physical and semantic information are in conflict (''Stroop" effect). Response competition implies that brain areas associated with correct and incorrect responses (e.g., left and right motor cortices) should be simultaneously activated in conflict conditions. However, there is at present little direct evidence of this phenomenon, in part because of the paucity of brain imaging techniques that can independently monitor the time course of activation of adjacent brain areas, such as the motor areas. In the present study, we show that the event-related optical signal (EROS) can provide these types of data. The results confirm the prediction that conflict trials elicit simultaneous activation of both motor cortices, whereas nonconflict trials elicit brain activity only in the contralateral motor cortex. These data support a parallel view of the human information processing system.