Gamma oscillations and stimulus selection

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.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Action Potentials
  • Animals
  • Biological Clocks / drug effects
  • Biological Clocks / physiology*
  • Computer Simulation
  • Electric Stimulation
  • Models, Neurological*
  • Neural Inhibition / physiology
  • Neurons / classification
  • Neurons / physiology*
  • Oscillometry
  • Synaptic Transmission / physiology