Fig. 10

Histological representation of erection-related neurons plotted on diagrams of serial coronal sections around the septal area. Left hemisection shows neurons recorded during waking; Right hemisection shows neurons recorded during REM sleep; • Neurons excitatory to erection; ο Neurons with reduced firing during erection. Numbers above each section indicate distance from the bregma. AC anterior commissure, f fornix, HDB horizontal limb of diagonal band of Broca, Ld lambdoid septal zone, LSd, LSi and LSv indicate dorsal, intermediate and ventral parts of the lateral septum, respectively, MS medial septum, SFi septofimbrial nucleus, VDB vertical limb of diagonal band of Broca