Effect of Visual Attention on Binocular Fusion Limits. (October 2018)

• Record Type: Journal Article
• Authors: Kihara, Ken; Ono, Hiroshi
• Is Part Of: Perception. Volume 47:Number 10/11(2018)
• Page Start: 1097
• Page End: 1105
• Publication Date: 2018-10
• Subjects: fusion limit -- Panum's area -- binocular disparity -- visual attention -- Posner's spatial cueing paradigm; Perception -- Periodicals; Perception -- Periodicals; Perception; Periodicals; 153.705
• DOI: 10.1177/0301006618796719
• Languages: English
• ISSNs: 0301-0066

Abstract

We examined the effect of visual attention on binocular fusion limits by using Posner's spatial cueing paradigm that entails cued shifts of attentional focus. Results showed that attention decreases the fusion limit. Observers perceived diplopia of a binocular line within +/−26.5 arcmin disparity (+/− correspond to uncrossed and crossed, respectively) more frequently when it was oriented to the line than when cued attention was directed elsewhere. We discuss the results in terms of attention increasing spatial resolution and contrast sensitivity.