Representative sample of microinjection sites in CCI rats receiving125 nmol of carbachol. Mean response latencies were taken 10 minutes post injection and are represented as follows: filled circle, 6.1–8.0 seconds; open square, 4.1–6.0 seconds; open reverse triangle, 2.1–4.0 seconds. Abbreviations: 3V, 3rd ventricle; CA1, field CA1 of hippocampus; CA2, field CA2 of hippocampus; CA3, field CA3 of hippocampus; D3V, dorsal 3rd ventricle; f, fornix; LH, lateral hypothalamic area; LV, lateral ventricle; PH, posterior hypothalamic area. Stereotaxic coordinates are −3.1 mm from bregma, lateral −0.5 mm, vertical +2.1 mm, incisor bar set at −2.5 mm.