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. 2014 May 6;8:129. doi: 10.3389/fnbeh.2014.00129

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Copyright © 2014 Sparta, Smithuis, Stamatakis, Jennings, Kantak, Ung and Stuber.

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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Optogenetic analysis of the BLA-EC pathway. (A) Schematic depicting viral delivery method of AAV5-DIO-ChR2-eYFP, AAV5-DIO-NpHR3.0-eYFP, and AAV5-DIO-eYFP into the BLA of C57Bl/6J mice. (B) A representative coronal section of the BLA with expression of ChR2-eYFP (green) in pyramidal neurons within the BLA. Red, counterstaining with 640 nm Neurotrace to label all neuronal cell bodies. (D = dorsal; V = ventral; M = medial; L = lateral; scale bar = 500 μm). (C) A representative coronal section of the EC with expression of ChR2-eYFP (green) in glutamatergic fibers originating from the BLA (scale bar = 200 μm). (D) Percentage of light responsive vs. non-light responsive neurons in the EC following photostimulation of BLA glutamatergic fibers. (E) Example trace of a light responsive neuron in the EC. All values for all figures represent mean ± s.e.m.