Moving spot triggers motion detectors for two locations.
two locations and spot
How does brain associate two locations with one spot {correspondence problem, motion}? Brain follows spot from one location to next unambiguously. Tracking moving objects requires remembering earlier features and matching with current features. Vision can try all possible matches and, through successive iterations, find matches that yield minimum total distance between presentations.
location and spot
Turning one spot on and off can trigger same motion detector. How does brain associate detector activation at different times with one spot? Brain assumes same location is same object.
processes: three-dimensional space
Motion detectors are for specific locations, distances, object sizes, speeds, and directions. Motion-detector array represents three-dimensional space. Space points have spot-size motion detectors.
processes: speed
Brain action pathway is faster than object-recognition pathway. Brain calculates eye movements faster than voluntary movements.
constraints: continuity constraint
Adjacent points not at edges are at same distance from eye {continuity constraint, vision}.
constraints: uniqueness constraint
Scene features land on one retinal location {uniqueness constraint, vision}.
constraints: spatial frequency
Scene features have different left-retina and right-retina positions. Retina can use low resolution, with low spatial frequency, to analyze big regions and then use higher and higher resolutions.
Consciousness>Consciousness>Sense>Vision>Physiology>Motion>Spots
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Date Modified: 2022.0224