A photomicrograph of a coronal brain section, from one representative rat, which shows bilateral injection sites in the insular cortex.

<p>Diagrammatic representation based on the rat brain atlas of Paxinos and Watson (1997) indicating the microinjection sites of vehicle (white circles), WB4101 (black circles) and RX821002 (black squares) into the IC as well as WB4101 (gray circles) and RX821002 (gray squares) into structures surrounding the IC. Cg1 – cingulate cortex, area; PrL – prelimbic cortex, M1 – primary motor cortex; insular cortex – insular cortex, cc – corpus callosum, forceps minor of the corpus callosum (fmi).