Refractory period (sex) autonomic feedback mechanism, rather than through central chemicals like oxytocin, serotonin, and prolactin. Autonomic feedback is already known to regulate other physiologic systems, such as breathing, blood pressure, and gut motility. This theory suggests that after male ejaculation, decreased wall tension in structures such as the seminal vesicles leads to a change in the fine autonomic signals sent from these organs, effectively creating a negative feedback loop. Such a mechanism is similar to decreased gastric and bowel motility once gastric contents have passed through. Once the feedback loop has been created, the refractory period remains until the loop is broken
Refractory period (sex) through restoration of the wall tension in the seminal vesicles. As men age, the time to restore tension in the seminal vesicles increases. The female sexual response is more varied than that of men, and women are capable of attaining additional or multiple orgasms through further sexual stimulation. However, there are many women who experience clitoral hypersensitivity after orgasm, which can effectively create a refractory period. These women may be capable of further orgasms, but the pain involved in getting there makes the prospect undesirable. According to Havelock Ellis, most multi-orgasmic men (and their partners) report that multiple orgasms lead