Börgers Christoph, Kopell Nancy J
Department of Mathematics, Tufts University, Medford, MA 02155, USA.
Neural Comput. 2008 Feb;20(2):383-414. doi: 10.1162/neco.2007.07-06-289.
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.
已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且连贯输入以伽马频率振荡时，这种优势会大大增强。我们推测，这至少部分地解释了实验观察到的刺激竞争的注意力偏向与伽马频率节律性之间联系的功能意义。
