Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/20532
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Spatial-scale interaction in human stereoscopic vision in response to sustained and transient stimuli
Authors: Gheorghiu, Elena
Erkelens, Casper J
Contact Email: elena.gheorghiu@stir.ac.uk
Keywords: Spatial scales
Stereopsis
Coarse-to-fine
Fine-to-coarse
Issue Date: Mar-2004
Publisher: Elsevier
Citation: Gheorghiu E & Erkelens CJ (2004) Spatial-scale interaction in human stereoscopic vision in response to sustained and transient stimuli, Vision Research, 44 (6), pp. 563-575.
Abstract: We investigated temporal properties of stereopsis at different spatial scales in dynamic random-dot stereograms (DRS) consisting of (i) the repeated presentation of two image pairs (i.e. sustained presentation) and (ii) single presentations of two image pairs (transient presentation). In dense stereograms perception of depth is possible if the levels of interocular correlation are above a certain threshold. Therefore, detection of correlation is an important step in stereopsis. Across different experiments, we varied the level of interocular correlation as a function of time by alternating correlated and un/anticorrelated random-dot stereograms. Also, we varied their spatial scale (coarse, fine and alternating between coarse and fine). The presence of stereopsis was examined using a forced-choice depth detection task. For both sustained and transient presentations of the stimuli, the results show that (i) stereopsis has similar temporal properties at coarse and fine spatial scales; (ii) interaction between spatial scales depends on their relative sizes. The results indicate a strong inhibitory influence of rivalry at a coarse scale on stereopsis at a fine scale, and just a weak inhibitory influence of rivalry at a fine scale on stereopsis at a coarse scale. This study provides experimental evidence for a hierarchical organisation of spatial scales in human stereoscopic vision based on neural interaction instead of vergence eye movements.
Type: Journal Article
URI: http://hdl.handle.net/1893/20532
DOI Link: http://dx.doi.org/10.1016/j.visres.2003.10.016
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Psychology
Utrecht University

Files in This Item:
File Description SizeFormat 
Gheorghiu and Erkelens (2004).pdf488.63 kBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.