Effects of reticular formation lesions on afferent projections to the hypothalamus

摘要: Abstract The stimulation of the sciatic nerve in locally anesthetized cats caused appearance long and short (8–10) msec latency evoked potentials ventromedian posterolateral hypothalamus, respectively. In spite fact that later responses propagated to hypothalamus through oligosynaptic pathways, they had a prolonged recovery cycle upon double nerve, indicating extrinsic factors are responsible for dalay neuronal recovery. possible role reticular formation — which is known have an inhibitory effect on conduction classical sensory pathways was therefore investigated. Midbrain abolished hypothalamic potentials. placement electrolytic lesions this region reduced or but left intact shortened their introduced peaks cycle. Small amounts pentobarbital, block formation, similar responses. These results would indicate strong afferent thus giving it great measure regulatory control over important functions. view that, following lesions, remain intact, can also be elicited animals by medial lemniscal stimulation, while abolished, two envisaged. An pathway lemniscus polysynaptic extending midbrain hypothalamus.