The duality of selection: Excitatory and inhibitory processes in auditory selective attention
The duality of selection: Excitatory and inhibitory processes in auditory selective attention
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DOI：
10.1037//0096-1523.28.2.279
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发表时间：
2002-04-01
影响因子：
2.1
通讯作者：
Tong, YX
中科院分区：
文献类型：
--
作者：
Melara, RD;Rao, A;Tong, YX
行为和事件相关电位（ERP）的测量进行了听觉选择性注意范式，之前和之后的一系列抑制或歧视的培训课程。干扰物的存在导致感知灵敏度差，P3反应弱，反应保守，反应时间相对于基线缓慢。注意力分散促使ERP成分的额叶增强发生在注意信号（N1，P2和N2）出现后100-250 ms。训练改善了分心引起的行为干扰。接受抑制训练的参与者获得了干扰物的抑制处理的改善，在干扰物发生后200 ms达到峰值。在一个拟议的模型中，不同的兴奋和抑制机制的工作交互式地保持敏感性，以环境变化的破坏，从上下文整合的不相关的事件。
Behavioral and event-related potential (ERP) measurements were made in an auditory selective-attention paradigm, both before and after a series of inhibition or discrimination training sessions. The presence of distractors caused poor perceptual sensitivity, weak P3 responses, conservative responding, and slow reaction times relative to baseline. Distraction prompted a frontal enhancement of ERP components occurring 100-250 ms after the onset of attended signals (N1, P2, and N2). Training ameliorated behavioral interference from distraction. Participants receiving inhibition training acquired improved inhibitory processing of distractors, an effect that peaked 200 ms after distractor onset. In a proposed model, distinct excitatory and inhibitory mechanisms work interactively to maintain sensitivity to environmental change in the face of disruption from the contextual integration of irrelevant events.