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. 2014 May 30;8:198. doi: 10.3389/fnbeh.2014.00198

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Copyright © 2014 Ortuño, Grieve, Cao, Cudeiro, and Rivadulla.

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) or licensor 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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Corticofugal feedback modulates burst responses. (A) PSTH representing visual responses of the population of LGN cells in control and after TMS in visual cortex (orange). Bin size = 50 ms. Inset shows the response of a V1 neuron recorded in anesthetized cat, in both conditions. (B) PSTH showing the effect of TMS on spikes in burst for the same cells shown in panel (A). Bin size = 50 ms. (C) Comparison of the effect of TMS on spikes in burst and tonic spikes in the initial part of the response (20 to 80 ms).