Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Depth-increment detection function for individual spatial channels

Not Accessible

Your library or personal account may give you access

Abstract

We have used stimuli with difference-of-Gaussian (DOG) luminance profiles to measure depth-increment thresholds within postulated spatial channels as functions of depth from the fixation plane. Stereoacuity was best with high-frequency DOG’s presented at the fixation plane. Performance was relatively constant for spatial frequency above 2.4 cycles/deg, but it deteriorated as spatial frequency was decreased. Regardless of spatial frequency, stereo sensitivity declined rapidly as stimuli were presented away from the horopter. The falloff occurred more rapidly over the 0–20-arc-min range than over the 20–80-arc-min range. Depth was perceived over a broader range of disparity pedestals with low-spatial-frequency stimuli; however, the lowest thresholds were always obtained with the highest-frequency stimuli. Both the falloff of sensitivity with disparity pedestal and the disparity range of quantitative stereo depth lead to the conclusion that different size-tuned channels process disparity differently.

© 1985 Optical Society of America

Full Article  |  PDF Article
More Like This
Size–disparity correlation in stereopsis at contrast threshold

Harvey S. Smallman and Donald I. A. MacLeod
J. Opt. Soc. Am. A 11(8) 2169-2183 (1994)

Coarse spatial scales constrain the range of binocular fusion on fine scales

Hugh R. Wilson, Randolph Blake, and D. Lynn Halpern
J. Opt. Soc. Am. A 8(1) 229-236 (1991)

Luminance spatial scale facilitates stereoscopic depth segmentation

Frederick A. A. Kingdom, Lynn R. Ziegler, and Robert F. Hess
J. Opt. Soc. Am. A 18(5) 993-1002 (2001)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved