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Data
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Gamma-beta alternation in the olfactory bulb (David, Fourcaud-Trocmé et al., 2015)
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This model, a simplified olfactory bulb network with mitral and granule cells, proposes a framework for two regimes of oscillation in the olfactory bulb:
1 - a weak inhibition regime (with no granule spike) where the network oscillates in the gamma (40-90Hz) band
2 - a strong inhibition regime (with granule spikes) where the network oscillates in the beta (15-30Hz) band.
Slow modulations of sensory and centrifugal inputs, phase shifted by a quarter of cycle, possibly combined with short term depression of the mitral to granule AMPA synapse, allows the network to alternate between the two regimes as observed in anesthetized animals.
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Olfactory bulb main mitral GLU cell Show
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Olfactory bulb main interneuron granule MC GABA cell Show
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David F, Courtiol E, Buonviso N, Fourcaud-Trocmé N (2015) Show
Other
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nicolas.fourcaud-trocme@cnrs.fr
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Beta oscillations
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