注意对脑内双冲突信息串行处理的影响(2)
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单一冲突信息在注意不相关状态下也可诱发出N270,而在注意状态下N270的振幅明显增高。可见冲突信息处理系统的启动是自动发生的,但是注意却明显地调节着该系统的活动,使之明显增强。事件相关电位脑地形图表明,该系统可能有一比较深的神经发生源,以中央区明显,对于进入该系统的双冲突信息,采用串行机制处理。
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(收稿日期:2007-01-01)
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