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Contrast- and illumination-invariant object recognition from active sensation

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For more content, see Multisensory Research and Seeing and Perceiving.

It has been suggested that the deleterious effect of contrast reversal on visual recognition is unique to faces, not objects. Here we show from priming, supervised category learning, and generalization that there is no such thing as general invariance of recognition of non-face objects against contrast reversal and, likewise, changes in direction of illumination. However, when recognition varies with rendering conditions, invariance may be restored and effects of continuous learning may be reduced by providing prior object knowledge from active sensation. Our findings suggest that the degree of contrast invariance achieved reflects functional characteristics of object representations learned in a task-dependent fashion.

Affiliations: 1: Institute of Medical Psychology, University of Munich, Munich, Germany. Ingo.Rentschler@med.uni-muenchen.de; 2: Institute of Medical Psychology, University of Munich, Munich, Germany; 3: Psychology, School of Life and Health Sciences, Aston University, Birmingham, UK

10.1163/156856809789476128
/content/journals/10.1163/156856809789476128
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/content/journals/10.1163/156856809789476128
2009-09-01
2016-12-04

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