Fig. 1.

Location of microinjection sites are shown as circles indicating the locations and average spread of 100-nl microinjections of Chicago Sky Blue dye from animals that were included in the analysis. Some injection sites are overlapped due to their close proximity. Maps are based on templates from the Swanson atlas (47). aco, Anterior commissure; act, tract of anterior commissure; fx, fornix; LPO, lateral preoptic area; MPO, medial preoptic area; MS, medial septum; MEPO, median preoptic nucleus; NDB, diagonal band of Broca; och, optic chiasm; V3, 3rd ventricle; A-P, anterior-posterior; V3p, third ventricle, preoptic recess; VL, lateral ventricle; fxpr, precommissural fornix.