Related Experiment Video
Updated: Aug 24, 2026

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
Published on: November 16, 2017
BOLD response in dorsal areas varies with relative disparity level
Roland Marcus Rutschmann1, Mark W Greenlee
1Cognitive Neurosciences, University of Oldenburg, Ammerländer Heerstrasse 114, 26111 Oldenburg, Germany. Roland.M.Rutschmann@uni-oldenburg.de
Abstract:
Using fMRI, we explored cortical responses to dichoptically presented random-dot (RD) stimuli which formed a checkerboard by means of horizontal disparity (Julesz). Depth reversals occurred every 800 ms by appropriate horizontal shifting of a subset of the RD pattern. We compared cortical blood oxygen level dependent (BOLD) responses of five subjects under conditions with and without binocular disparity. The results indicate that only extrastriate, but not striate, areas responded more to the stimuli with binocular disparity. We further found that the BOLD signal increased with increasing disparity level only in dorsal areas of occipito-parietal and prefrontal cortex. These results suggest that the fMRI BOLD response can reflect the processing of relative binocular disparity in extrastriate cortex.
More Related Videos
Related Concept Videos
Causes of Similarity-Dissimilarity Effect
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Perceptual Constancy
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Lateralization
Difference from Background: Limit of Detection
The LOD indicates the presence or absence...
Depth Perception and Spatial Vision

