PSYC 363 Chapter Notes - Chapter 7: Optical Flow, Afterimage, Retina
16 Mar 2017
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Motor signal (ms) signal sent to eyes to move eye muscles. Corollary discharge signal (cds) copy of the motor signal. Image movement signal (ims) movement of image stimulates receptors across retina. Movement is perceived when comparator gets input from either; Movement is not perceived when comparator gets input from; Both corollary discharge & image movement signals at the same time. Traditional lab research was too artificial observers were not allowed to momve their heads. Unable to provide an explanation for how pilots used environmental information to land airplanes. Optic flow appearance of objects as observer moves past them: self-produced info: flow created by observer moving. Invariant info: properties that remain constant as observer is moving: gradient flow difference in flow with distance from observer, focus of expansion point in distance where there is no flow. Expansion is greater for things closer to you. Do people use flow information: land and lee, car fitted to measure:
