A reevaluation of the tolerance to vertical misalignment in stereopsis. Fukuda, K., Wilcox, L., Allison, R., & Howard, I. Journal of Vision, 9(2):1-8, 2009. ![A reevaluation of the tolerance to vertical misalignment in stereopsis [link]](https://bibbase.org/img/filetypes/link.svg "link")
-1 doi abstract bibtex The stereoscopic system tolerates some vertical misalignment of the images in the eyes. for However, the reported tolerance for an isolated line stimulus ( 4 degrees) is greater than a random-dot stereogram (RDS, 45 arcmin). We hypothesized that the greater tolerance can be attributed to monoptic depth signals (E. Hering, 1861; M. Kaye, 1978; L. M. Wilcox, J. M. Harris, & S. P. McKee, 2007). We manipulated the vertical misalignment of a pair of isolated stereoscopic dots to assess the contribution of each depth signal separately. For the monoptic stimuli, where only one half-image was present, equivalent horizontal and vertical offsets were imposed instead of disparity. Judgments of apparent depth were well above chance, though there was no conventional disparity signal. For the stereoscopic stimuli, one element was positioned at the midline where monoptic depth perception falls to chance but conventional disparity remains. Subjects lost the depth percept at a vertical misalignment of between 44 and 88 arcmin, which is much smaller than the limit found when both signals were provided. This tolerance for isolated stimuli is comparable to the reported tolerance for RDS. We conclude that previous reports of the greater tolerance to vertical misalignment for isolated stimuli arose from the use of monoptic depth signals.
@article{allison20091-8,
abstract = {The stereoscopic system tolerates some vertical misalignment of the images in the eyes. for However, the reported tolerance for an isolated line stimulus (~4 degrees) is greater than a random-dot stereogram (RDS, ~45 arcmin). We hypothesized that the greater tolerance can be attributed to monoptic depth signals (E. Hering, 1861; M. Kaye, 1978; L. M. Wilcox, J. M. Harris, & S. P. McKee, 2007). We manipulated the vertical misalignment of a pair of isolated stereoscopic dots to assess the contribution of each depth signal separately. For the monoptic stimuli, where only one half-image was present, equivalent horizontal and vertical offsets were imposed instead of disparity. Judgments of apparent depth were well above chance, though there was no conventional disparity signal. For the stereoscopic stimuli, one element was positioned at the midline where monoptic depth perception falls to chance but conventional disparity remains. Subjects lost the depth percept at a vertical misalignment of between 44 and 88 arcmin, which is much smaller than the limit found when both signals were provided. This tolerance for isolated stimuli is comparable to the reported tolerance for RDS. We conclude that previous reports of the greater tolerance to vertical misalignment for isolated stimuli arose from the use of monoptic depth signals.},
author = {Fukuda, K. and Wilcox, L.M. and Allison, R.S. and Howard, I.P.},
date-modified = {2012-07-02 17:31:17 -0400},
doi = {10.1167/9.2.1},
journal = {Journal of Vision},
keywords = {Stereopsis},
number = {2},
pages = {1-8},
title = {A reevaluation of the tolerance to vertical misalignment in stereopsis},
url-1 = {http://dx.doi.org/10.1167/9.2.1},
volume = {9},
year = {2009},
url-1 = {https://doi.org/10.1167/9.2.1}}
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