[PSYB51H3] - Final Exam Guide - Everything you need to know! (92 pages long)
Document Summary
Light is what helps the circadian rhythm to gets it rhythm right. When you are jetlagged, you train your circadian rhythm with regular daylight. There is a set of photoreceptors in the retina that speci cally inform this system in the hypothalamus: but it wasn"t always like that, mammals emerged when dinosaurs ruled the earth. Small creatures that survived at night had a keen sense of smell and hearing. Our vision to this day is not as good as the vision of many other animals such as birds. Light from any direction goes onto this spot, so it"s location is not too speci c: b) next, this cluster of photoreceptors probably became embedded in some cavity, into a depressed/ folded area. Optic functions of the eye: refraction is performed by the cornea and by the lens, and is necessary to focus light rays. This is done by the four optical components.