The relative importance of contrast and motion in visual detection.

摘要: Abstract : Results of a previous study (see AD-720 800) suggested that the effect motion on detecability might be caused entirely by contrast changes as target moves over complex background. The test documented in present study, employing television display and an artificial background, showed independent effects both detectability. can accounted for modifying exponent detection probability function with linear term second-power velocity term. Single-fixation experiments confirmed larger aperture moving targets than static targets, also demonstrated gradual increase fixation time required to detect its distance from point. (Author)