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. 2021 Jan 21;14:608047. doi: 10.3389/fnins.2020.608047

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Copyright © 2021 Garcia, Coss, Luis-Islas, Puron-Sierra, Luna, Villavicencio and Gutierrez.

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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After repeated activation of LHA^Vgat+ neurons, laser-bound feeding (in open vs. closed loop) strengthened and exhibited a positive correlation. (A) Scatter plots showing the relationship between laser-bound feeding (licks given during the 2.5 s window from laser onset relative to total licks in the session) in both open loop and closed-loop tasks during the first 3 days (left panel) and the last 5 days of opto-stimulation of open loop vs. opto-self-stimulation of the closed-loop protocols (right panel). (B) Likewise, after repeated activation, both opto-self-stimulations and laser-bound feeding (licking) showed a significant correlation. Scatter depicting the average number of opto-self-stimulations vs. the laser-bound feeding observed in the closed-loop protocol.