Perceived speed of motion in depth is reduced in the periphery

Brooks, K. and Mather, George (2000) Perceived speed of motion in depth is reduced in the periphery. Vision Research, 40 (25). pp. 3507-3516. ISSN 0042-6989

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The perceived speed of motion in depth (MID) for a monocularly visible target was measured in central and peripheral vision using a 2AFC speed discrimination task. Only binocular cues to MID were available: changing disparity and interocular velocity difference (IOVD). Perceived speed for monocular lateral motion and perceived depth for static disparity were also assessed, again in both central and peripheral vision. The purpose of the experiment was to assess the relative contributions of changing disparity and IOVD cues to the perceived speed of stereomotion. Although peripheral stimuli appeared to lie at approximately the same depth as their central counterparts, their apparent speed was reduced. Monocular/lateral and binocular/MID speeds were reduced to a similar extent. It seems that reduced apparent monocular speed leads to reduced perceived MID speed, despite the fact that the disparity system appears to be unaffected. These results suggest that the IOVD cue makes a significant contribution to MID speed perception. Copyright (C) 2000 Elsevier Science Ltd.

Keywords:adult, article, depth perception, female, human, human experiment, male, motion, normal human, priority journal, stimulus, velocity, Adult, Humans, Motion Perception, Vision Disparity, Vision, Monocular, Visual Fields
Subjects:B Subjects allied to Medicine > B140 Neuroscience
C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
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ID Code:16116
Deposited On:03 Dec 2014 12:51

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