![]() 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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