Gamma oscillations and stimulus selection
Gamma oscillations and stimulus selection
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DOI：
10.1162/neco.2007.07-06-289
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发表时间：
2008-02-01
影响因子：
2.9
通讯作者：
Kopell, Nancy J.
中科院分区：
文献类型：
--
作者：
Boergers, Christoph;Kopell, Nancy J.
众所周知，更连贯的兴奋性刺激比不太连贯的刺激具有竞争优势。我们在此表明，当目标包括通过 GABA(A) 受体介导的突触起作用的抑制性中间神经元并且相干输入以伽马频率振荡时，这种优势会大大放大。我们假设其中至少部分地存在实验观察到的刺激竞争的注意力偏差与伽马频率节律性之间的联系的功能意义。
More coherent excitatory stimuli are known to have a competitive advantage over less coherent ones. We show here that this advantage is amplified greatly when the target includes inhibitory interneurons acting via GABA(A)-receptor-mediated synapses and the coherent input oscillates at gamma frequency. We hypothesize that therein lies, at least in part, the functional significance of the experimentally observed link between attentional biasing of stimulus competition and gamma frequency rhythmicity.