PSYC 271 Lecture 11: Vision (II)
14 Dec 2015
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Document Summary
Out of the eye and into the brain. Cell types o: orientation columns o, modules. Light enters the eyes, directed by lens towards retina & fovea in particular. Ganglion cells leave eye w/ some processing already (edge enhancement) Lateral geniculate nucleus (thalamus) relays visual info to visual cortex. Suprachiasmatic nucleus (scn) in hypothalamus (1) regulates wake/dark cycle (2) sends info to pineal gland (melatonin) Eyes are necessary for vision, but also as a motor response. Eyes move around to center fovea on areas of interest = fixation points. A lot of this is considered in advertisements. Eye tracking: identification of what eyes look at. Esp relevant for industry/marketing o o o o. Optic nerves (ganglion axons) leave eye and travel to the thalamus & into the lateral geniculate nuclei (lgn) Info from the left visual field goes to right thalamus and the right visual cortex.
