Gamma Oscillations and Stimulus Selection

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 -receptor-mediated synapses and the coherent input oscillates at gamma frequency....

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Bibliographic Details
Published in:Neural computation 2008-02, Vol.20 (2), p.383-414
Main Authors: Börgers, Christoph, Kopell, Nancy J.
Format: Article
Language:English
Subjects:
Action Potentials
Animals
Biological Clocks - drug effects
Biological Clocks - physiology
Computer Simulation
Electric Stimulation
Ions
Letters
Models, Neurological
Neural Inhibition - physiology
Neurons
Neurons - classification
Neurons - physiology
Neurotransmitters
Oscillometry
Synaptic Transmission - physiology
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Summary: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 -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.
ISSN:0899-7667
1530-888X
DOI:10.1162/neco.2007.07-06-289