Photomicrographs of representative striatal lesions ∼1 mm anterior to bregma in the coronal plane.A, A medial caudate putamen lesion. B, A lateral caudate putamen lesion. C, An olfactory tubercle lesion. D, A nucleus accumbens lesion. Calibration, 1 mm. LV, Lateral ventricle; ec, external capsule; ac, anterior commissure; Pir, piriform cortex; Tu, olfactory tubercle. Lesions are described in Results.