Results of stimulation are shown on left and results of recording on right. Brain sections taken from atlases of Jasper and Ajmone-Marsan and Reinoso-Suarez. AM: nucleus anterior medialis. CL: nucleus centralis lateralis. CS: colliculus superior. FLN: fasciculus longitudinalis medialis. Fx: fornix. GC: griseum centrale. HL: hypothalamus lateralis. Hvm: hypothalamus ventromedialis. MD: nucleus medialis dorsalis. Mm: corpus mamillare. N III and N IV: nuclei of third and fourth nerves. NR: nucleus ruber. Pti: pedunculus thalamicus inferior. RE: nucleus reuniens. Ret Mes: substantia reticularis mesencephalica. TMT: tractus mamillo-thalamicus. VA : nucleus ventralis anterior. VM: nucleus ventralis medialis. VPM: nucleus ventralis postero-medialis.