Induction of monocular stereopsis by altering focus distance : a test of Ames's hypothesis
Abstract
Viewing a real 3-dimensional scene or a stereoscopic image with both eyes generates a vivid phenomenal impression of depth known as stereopsis. Numerous reports have highlighted the fact that an impression of stereopsis can be induced in the absence of binocular disparity. A method claimed by Ames (1925) involved altering accommodative (focus) distance while monocularly viewing a picture. This claim was tested on naïve observers using a method inspired by the observations of Gogel and Ogle on the equidistance tendency. Consistent with Ames’s claim, most observers reported that the focus manipulation induced an impression of stereopsis comparable to that obtained by monocular-aperture viewing.
Citation
Vishwanath , D 2016 , ' Induction of monocular stereopsis by altering focus distance : a test of Ames's hypothesis ' , i-Perception , vol. 7 , no. 2 . https://doi.org/10.1177/2041669516643236
Publication
i-Perception
Status
Peer reviewed
ISSN
2041-6695Type
Journal article
Rights
© The Author(s) 2016. This is an Open Access article. This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed.
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