Silencing and stimulating the medial amygdala impairs ejaculation but not sexual incentive motivation in male rats
We report that MeA stimulation and inhibition did not affect sexual incentive motivation. Moreover, both stimulation and inhibition of the MeA decreased the number of ejaculations in a 30 minute copulation test and increased ejaculation latency and the number of mounts and intromissions preceding ejaculation, while leaving the temporal pattern of copulation intact. These results indicate that the MeA may be involved in the processing of sensory feedback required to reach ejaculation threshold. The convergence of the behavioral effects of stimulating as well as inhibiting the MeA may reflect opposing behavioral control of specific neuronal populations within the MeA.PMID:33639266 | DOI:10.1016/j.bbr.2021.113206
Source: Brain Research - Category: Neurology Authors: Patty T Huijgens Roy Heijkoop Eelke M S Snoeren Source Type: research