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
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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