Role for acetylcholine in mediating effects of light on reproduction. Academic Article uri icon


  • The length of day, or photoperiod, regulates the annual cycle of reproductive activity in the golden hamster. The inhibitory effects of a short-day photoperiod on testicular function were prevented by nighttime, but not daytime, intraventricular injections of carbachol, a cholinergic agonist. Short pulses of light during the night also block short-day induced testicular regression. The findings suggest that acetylcholine may play an important role in the mechanism through which information about the light-dark environment is transferred to the hypothalamic-pituitary-gonadal axis.

published proceedings

  • Science

author list (cited authors)

  • Earnest, D. J., & Turek, F. W.

citation count

  • 44

complete list of authors

  • Earnest, DJ||Turek, FW

publication date

  • January 1983