Summary: Rapid Communication
Depth-dependent blur adaptation
Peter W. Battaglia a
, Robert A. Jacobs b,*, Richard N. Aslin b
Department of Psychology, University of Minnesota, Minneapolis, MN 55455, USA
Department of Brain and Cognitive Sciences and the Center for Visual Science, University of Rochester, 274 Meliora Hall,
Rochester, NY 14627-0270, USA
Received 4 July 2003; received in revised form 3 September 2003
Variations in blur are present in retinal images of scenes containing objects at multiple depth planes. Here we examine whether
neural representations of image blur can be recalibrated as a function of depth. Participants were exposed to textured images whose
blur changed with depth in a novel manner. For one group of participants, image blur increased as the images moved closer; for the
other group, blur increased as the images moved away. A comparison of post-test versus pre-test performances on a blur-matching
task at near and far test positions revealed that both groups of participants showed significant experience-dependent recalibration of
the relationship between depth and blur. These results demonstrate that blur adaptation is conditioned by 3D viewing contexts.
Ó 2003 Elsevier Ltd. All rights reserved.
Keywords: Perceptual learning; Visual adaptation; Perceptual constancy; Visual blur