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- W2148351310 abstract "In the primate visual cortex, the phase of spikes relative to oscillations in the local field potential (LFP) in the gamma frequency range (30-80 Hz) can be shifted by stimulus features such as orientation and thus the phase may carry information about stimulus identity. According to the principle of communication through coherence (CTC), the relative LFP phase between the LFPs in the sending and receiving circuits affects the effectiveness of the transmission. CTC predicts that phase shifting can be used for stimulus selection. We review and investigate phase shifting in models of periodically driven single neurons and compare it with phase shifting in models of cortical networks. In a single neuron, as the driving current is increased, the spike phase varies systematically while the firing rate remains constant. In a network model of reciprocally connected excitatory (E) and inhibitory (I) cells phase shifting occurs in response to both injection of constant depolarizing currents and to brief pulses to I cells. These simple models provide an account for phase-shifting observed experimentally and suggest a mechanism for implementing CTC. We discuss how this hypothesis can be tested experimentally using optogenetic techniques." @default.
- W2148351310 created "2016-06-24" @default.
- W2148351310 creator A5015482433 @default.
- W2148351310 creator A5044141636 @default.
- W2148351310 date "2010-01-01" @default.
- W2148351310 modified "2023-10-14" @default.
- W2148351310 title "Mechanisms for Phase Shifting in Cortical Networks and their Role in Communication through Coherence" @default.
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- W2148351310 doi "https://doi.org/10.3389/fnhum.2010.00196" @default.
- W2148351310 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2987601" @default.
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