Psych Lecture Exam 3 I. Five Macro (larger), Eye Movements a. OptoKinetic Reflex or Optokinetic Nystagmus OKR or OKN a.i. Keeps your eye focused on something, tracks moving objects. a.ii. Railway nystagmus: people were looking out train windows and their eyes a.ii.1. Slow phase: tracking phase, your eyes can only go so far a.ii.2. Fast phase: the flicking phase, the return back to beginning eye position. a.iii. Some animals don’t have this: chickens, pigeons. b. Vestibulo-ocular Reflex VOR: an upgrade to the eye system that keeps things stable in the back of the eye. b.i. Part of the vestibular system. b.ii. There are 3 holed out donuts in the ear that has fluid in it, has hair, if the structures are rotated about the inner ear in a direction that is opposite to normal, an action potential is created. c. You feel sick when the Optokinetic Reflex is out of balance of with the Vestibulo-ocular Reflex. d.
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