Texture discrimination asymmetries across the visual field

Texture discrimination asymmetries across the visual field Spatial Vision , Vol. 19, No. 5, pp. 389 – 412 (2006)  VSP 2006. Also available online - www.brill.nl/sv Texture discrimination asymmetries across the visual field CINDY POTECHIN and RICK GURNSEY ∗ Department of Psychology, Concordia University, 7141 Sherbrook Street West, Montreal, QC, Canada Received 10 September 2005; accepted 6 December 2005 Abstract —Texture discrimination is sometimes asymmetrical; texture A embedded in texture B is more easily detected than texture B embedded in texture A. Furthermore, texture discrimination often improves as the disparate texture is moved into the periphery; this has been referred to as the central performance drop (CPD). The interaction of these interesting and counter-intuitive aspects of texture discrimination has received very little attention. Using four stimulus pattern pairs that were previously shown to elicit asymmetrical texture discrimination, we examined texture discrimination asymmetries as a function of eccentricity. We found three patterns of results; (i) both texture arrangements (A in B, and B in A) elicit a CPD but do not show an asymmetry, (ii) both texture arrangements elicit a monotonic decrease in performance with eccentricity (i.e. no CPD) but an asymmetry is seen at each eccentricity and (iii) discrimination asymmetries are minimal at fixation http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Spatial Vision (continued as Seeing & Perceiving from 2010) Brill

Texture discrimination asymmetries across the visual field

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Publisher
Brill
Copyright
© 2006 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0169-1015
eISSN
1568-5683
D.O.I.
10.1163/156856806778457395
Publisher site
See Article on Publisher Site

Abstract

Spatial Vision , Vol. 19, No. 5, pp. 389 – 412 (2006)  VSP 2006. Also available online - www.brill.nl/sv Texture discrimination asymmetries across the visual field CINDY POTECHIN and RICK GURNSEY ∗ Department of Psychology, Concordia University, 7141 Sherbrook Street West, Montreal, QC, Canada Received 10 September 2005; accepted 6 December 2005 Abstract —Texture discrimination is sometimes asymmetrical; texture A embedded in texture B is more easily detected than texture B embedded in texture A. Furthermore, texture discrimination often improves as the disparate texture is moved into the periphery; this has been referred to as the central performance drop (CPD). The interaction of these interesting and counter-intuitive aspects of texture discrimination has received very little attention. Using four stimulus pattern pairs that were previously shown to elicit asymmetrical texture discrimination, we examined texture discrimination asymmetries as a function of eccentricity. We found three patterns of results; (i) both texture arrangements (A in B, and B in A) elicit a CPD but do not show an asymmetry, (ii) both texture arrangements elicit a monotonic decrease in performance with eccentricity (i.e. no CPD) but an asymmetry is seen at each eccentricity and (iii) discrimination asymmetries are minimal at fixation

Journal

Spatial Vision (continued as Seeing & Perceiving from 2010)Brill

Published: Jan 1, 2006

Keywords: CENTRAL PERFORMANCE DROP; ECCENTRICITY; NEURAL IMAGES; TEXTURE

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