Fig. 7.

Representative coronal sections illustrating the site of implantation for (Left) medial forebrain bundle (MFB) stimulating electrodes (●) and (Right) striatal carbon fiber recording electrodes ( | ). Only electrode sites for one half of the mice tested (n=50 per site) are shown as the remainder (n=51) closely overlapped with those depicted here. NAc and NAs, correspond to nucleus accumbens core and shell, respectively; ac, anterior commissure; mt, mammillothalamic tract; cp, cerebral peduncle. Numbers correspond to mm from bregma in accordance with the mouse atlas of Franklin and Paxinos (1997).