Underwood H, Menaker M
Science. 1970 Oct 9;170(3954):190-3. doi: 10.1126/science.170.3954.190.
The circadian activity rhythm of the iguanid lizard Sceloporus olivaceus can be entrained by light cycles whether or not the animals have eyes. Removal of the pineal organ and parietal eye in blinded lizards does not prevent entrainment. Our data demonstrate the existence of an extraretinal photoreceptor which can mediate entrainment of a biological clock in reptiles.
无论鬣鳞蜥是否有眼睛，其昼夜活动节律都可被光照周期所调节。去除失明蜥蜴的松果体器官和顶眼并不能阻止这种调节。我们的数据表明，存在一种视网膜外光感受器，它可以介导爬行动物生物钟的调节。
