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. 2018 Nov 22;12:837. doi: 10.3389/fnins.2018.00837

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Copyright © 2018 McAfee, Liu, Dhamala and Heck.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Synchronization of spike activity in dLGN and V1 is strongly linked to both narrow and broadband high gamma in V1. (A) Example cross-correlation of dLGN-V1 spike synchrony and V1 LFP oscillations across frequency bands during gray screen viewing. Peak correlation occurs in the narrowband gamma frequency range. (B) Same as (A) for checkerboard viewing. Peak correlation exists across a broader frequency band, consistent with contrast-evoked broadband high gamma in V1. (C) Example statistical test for correlation between spike synchrony and bandpass-filtered high gamma in the V1 LFP (50–90 Hz) during gray screen viewing. Tested individually, significant peaks and troughs were detected in 5 of 6 animals. Thousand surrogates were generated by jittering dLGN spikes, and median surrogate values were subtracted for easier visual interpretation. (D) Same as C for checkerboard viewing. Tested individually, significant peaks and troughs were detected in all animals.