PSYB51H3 Chapter Notes - Chapter 8: Nystagmus, Color Vision, Akinetopsia
Document Summary
After viewing motion in a constant direction for a sustained period of time, we see any stationary objects that we see subsequently as moving in the opposite direction. Motion aftereffect: the illusion of motion of a stationary object that occurs after prolonged exposure to a moving object. This is commonly called the waterfall after effect. Reichardt detectors are the circuitry we think that helps us compute visual motion. Our motion detector cell cannot simply add up inputs from receptors a and b. It would fire in response to the moving bug, but it might also respond to two stationary bugs, one in each receptive field. To solve this problem, two additional components are needed in our neural circuit. The first receives response from neuron a and delays the response such that the response from a and b reach at the same time if the object is moving.
