Supplementary Figure 7: Histology for behavioral optogenetic experiments.

Identifier (e.g. “IM389”) for each rat is given at bottom right corner. Coronal sections shown are within 180µm (anterior-posterior) of the observed fiber tip location. Green indicates expression of eYFP, blue is DAPI counterstain. In a couple of cases (IM423, IM441) autofluorescence of damaged brain tissue is visible along the optic fiber tracts; this was not specific to the green channel.