Lesions of the AcbC. (A and B) Photographs of coronal sections through the nucleus accumbens immunostained for NeuN from an AcbC-lesioned (A), and a sham-operated (B) rat. The black dotted lines delineate the AcbC. The solid lines outline the boundary of the anterior commissure to facilitate its distinction from the area of lesion. Scale bar in B applies to all photographs and represents 0.5 mm. Abbreviation: ac, anterior commissure. (C) Schematic diagram of a series of coronal sections of the rat brain illustrating the extent of bilateral AcbC lesions (darkness represents coincidence of lesions from different animals). The numbers refer to millimeters anterior to bregma according to the standard atlas .