The dichoptiscope: An instrument for investigating cues to motion in depth. Howard, I. P., Fukuda, K., & Allison, R. S. Journal of Vision, 13(14: Article 1):1-11, 2013. ![The dichoptiscope: An instrument for investigating cues to motion in depth [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper -1 -2 doi abstract bibtex A stereoscope displays 2-D images with binocular disparities (stereograms), which fuse to form a 3-D stereoscopic object. But a stereoscopic object creates a conflict between vergence and accommodation. Also, motion in depth of a stereoscopic object simulated solely from change in target vergence produces anomalous motion parallax and anomalous changes in perspective. We describe a new instrument, which overcomes these problems. We call it the dichoptiscope. It resembles a mirror stereoscope, but instead of stereograms, it displays identical 2-D or 3-D physical objects to each eye. When a pair of the physical, monocular objects is fused, they create a dichoptic object that is visually identical to a real object. There is no conflict between vergence and accommodation, and motion parallax is normal. When the monocular objects move in real depth, the dichoptic object also moves in depth. The instrument allows the experimenter to control independently each of several cues to motion in depth. These cues include changes in the size of the images, changes in the vergence of the eyes, changes in binocular disparity within the moving object, and changes in the relative disparity between the moving object and a stationary object.
@article{Howard:fk,
abstract = {A stereoscope displays 2-D images with binocular disparities (stereograms), which fuse to form a 3-D stereoscopic object. But a stereoscopic object creates a conflict between vergence and accommodation. Also, motion in depth of a stereoscopic object simulated solely from change in target vergence produces anomalous motion parallax and anomalous changes in perspective. We describe a new instrument, which overcomes these problems. We call it the dichoptiscope. It resembles a mirror stereoscope, but instead of stereograms, it displays identical 2-D or 3-D physical objects to each eye. When a pair of the physical, monocular objects is fused, they create a dichoptic object that is visually identical to a real object. There is no conflict between vergence and accommodation, and motion parallax is normal. When the monocular objects move in real depth, the dichoptic object also moves in depth. The instrument allows the experimenter to control independently each of several cues to motion in depth. These cues include changes in the size of the images, changes in the vergence of the eyes, changes in binocular disparity within the moving object, and changes in the relative disparity between the moving object and a stationary object.},
author = {Howard, I. P. and Fukuda, K. and Allison, R. S.},
date-added = {2013-10-19 15:39:29 +0000},
date-modified = {2014-09-26 02:17:29 +0000},
doi = {10.1167/13.14.1},
journal = {Journal of Vision},
keywords = {Stereopsis, Motion in depth},
number = {14: Article 1},
pages = {1-11},
title = {The dichoptiscope: An instrument for investigating cues to motion in depth},
url = {http://ww.journalofvision.org/content/13/14/1.full},
volume = {13},
year = {2013},
url-1 = {http://ww.journalofvision.org/content/13/14/1.full},
url-2 = {https://doi.org/10.1167/13.14.1}}
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