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The nature of learned categorical perception effects: a psychophysical approach

Notman, LA, Sowden, PT and Ozgen, E (2005) The nature of learned categorical perception effects: a psychophysical approach Cognition, 95 (2). B1-B14.

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Abstract

Categorical perception is often cited as a striking example of cognitive influences on perception. However, some evidence suggests the term is a misnomer, with effects based on cognitive not perceptual processing. Here, using a psychophysical approach, we provide evidence consistent with a learned categorical perception effect that is dependent on analysis within the visual processing stream. An improvement in participants' discrimination between grating patterns that they had learned to place in different categories was 'tuned' around the orientation of the patterns experienced during category learning. Thus, here, categorical perception may result from attentionally modulated perceptual learning about diagnostic category features, based upon orientation-selective stages of analysis. This argues strongly that category learning can alter our perception of the world. (C) 2005 Elsevier B.V. All rights reserved.

Item Type: Article
Divisions : Faculty of Arts and Social Sciences
Authors :
NameEmailORCID
Notman, LAUNSPECIFIEDUNSPECIFIED
Sowden, PTUNSPECIFIEDUNSPECIFIED
Ozgen, EUNSPECIFIEDUNSPECIFIED
Date : 2005
Identification Number : 10.1016/j.cognition.2004.07.002
Uncontrolled Keywords : categorical perception perceptual learning orientation spatial frequency categorization PRIMARY VISUAL-CORTEX ADULT OWL MONKEYS FREQUENCY-DISCRIMINATION TASK SPATIAL-FREQUENCY ORIENTATION DISCRIMINATION TEXTURE-DISCRIMINATION PLASTICITY REPRESENTATION IMPROVEMENT ATTENTION
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:43
Last Modified : 31 Oct 2017 14:59
URI: http://epubs.surrey.ac.uk/id/eprint/754988

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