NMDA receptor-dependent switching between different gamma rhythm-generating microcircuits in entorhinal cortex
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...…to pyramidal cells, and although these cells receive input from many different sub-types of inhibitory interneurons, it is the input from fast-spiking basket cells that primarily determine the frequency and power of the resulting network oscillations (Fuchs et al., 2007; Middleton et al., 2008)....
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...Additionally, an in vitro model of gamma oscillations in the entorhinal cortex found that basket cells mediate slow but not faster gamma (Middleton et al., 2008)....
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...We found that intrinsic CA1 gamma was 11 Hz faster than that generated by CA3, replicating previous findings by others (Middleton et al., 2008; Pietersen et al., 2014)....
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References
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"NMDA receptor-dependent switching b..." refers background in this paper
...This mechanism can underlie gamma rhythms in a broad range of frequencies from around 20 Hz up to 70 Hz in the hippocampus (8) but cannot support higher frequencies such as those labeled as ‘‘high gamma’’ previously (9)....
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"NMDA receptor-dependent switching b..." refers background in this paper
...The basic mechanism of generation of population gamma rhythms by local neuronal circuits reveals an absolute dependence on the influence of fast spiking inhibitory interneurons at the level of principal cell somata (5, 6),with the frequency dependent on the magnitude and kinetics of gamma aminobutyric acid (GABAA) receptor-mediated synaptic events (7)....
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1,529 citations
"NMDA receptor-dependent switching b..." refers background in this paper
...For example, removal of entorhinal cortex in vivo produces a slower gamma rhythm (39), whose origins appear to be in area CA3 (40)....
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985 citations
"NMDA receptor-dependent switching b..." refers background in this paper
...For example, removal of entorhinal cortex in vivo produces a slower gamma rhythm (39), whose origins appear to be in area CA3 (40)....
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899 citations