Chapter

Physiology of disparity detection

Ian P. Howard and Brian J. Rogers

in Perceiving in Depth

Published in print February 2012 | ISBN: 9780199764150
Published online May 2012 | e-ISBN: 9780199949366 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199764150.003.0008

Series: Oxford Psychology Series

Physiology of disparity detection

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Stereoscopic vision involves detection of the 3-D structure of stimuli from differences between the images in the two eyes. This chapter reviews what is known about the physiology of these detectors in cats and primates. Disparity detectors in the primary visual cortex code simple local disparities. Disparity detectors in the dorsal and the ventral streams of cortical processing are responsible for detecting disparity gradients, higher order patterns of disparity, and the joint coding of disparity and motion. Experiments are reviewed that used PET scan and fMRI to locate brain centers involved in detection of disparity. The chapter ends with a review of theoretical models of stereoscopic vision.

Keywords: disparity detectors; stereopsis and fMRI; models of stereopsis

Chapter.  38426 words.  Illustrated.

Subjects: Neuroscience

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