![]() Optic Array Provides unambious information about layout of objects in space - light rays reflect of surfaces converging in the cornea - more structure changes. Evidence of proprioception - move to compensate for movement of the room - vision for balance - vision more important than info from muscles - vision dominates in self motion - increase velocity = RLA feeling of movement (Imax, rides) Gibson no need for cognitive processes to interpret visual image as transforming array can unambiguously specify properties of the surround world. Lee = vision is 'tuning up' & calibrating other senses Observers "hooked like puppets" - unusual stance, compliant surface, toddlers fall over Kinetic Depth Effect When rotated looks like 3-D image, observer sees 2D image - rotates - extract info for movement for 3D Stereokinetic Effect Assume shape when rotates (cone appears out of hollow shape - rotation provides Random Dot Kinetmatograms Flows of dots makes look like 3D image - i.e cycloidal shape of dots Gibson Distinguish between proprispecific and exterospecific Lee (1974) - Swinging room creates same pattern of optic flow, as swaying observer would, therefore, observer compensates by moving in same direction as the room. Car window) Expansion/Contraction When object moves towards observer, retinal project of object expands of period of time which leads to perception of movement in a line toward observer = change = movement = distance cue - related to LEE - TTC of an approaching object via rate of optic expansion. ![]() Gibson perception as 'direct pickup' of information Motion Parralax Monocular depth cue in which we view objects that are closer to us as moving faster than objects further away=relative distance=depth (e.g. ![]() Gregory perception as "hypothesis testing" Indirect Perception is (_) as the isn't sufficient info in the retinal image to specify unambiguously the structure of the scene that gave rise to it. ![]() Helmholtz perception as "cues and clues" interpreted via unconscious inference. Berkeley first to suggest recovery of distance depend on ability to learn relationship of cues (distance) in the environment. ![]()
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