Not all face aftereffects are equal

Storrs, Katherine R. and Arnold, Derek H. (2012) Not all face aftereffects are equal. Vision Research, 64 7-16. doi:10.1016/j.visres.2012.04.020

Author Storrs, Katherine R.
Arnold, Derek H.
Title Not all face aftereffects are equal
Journal name Vision Research   Check publisher's open access policy
ISSN 0042-6989
Publication date 2012-07
Sub-type Article (original research)
DOI 10.1016/j.visres.2012.04.020
Open Access Status
Volume 64
Start page 7
End page 16
Total pages 10
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Formatted abstract
After prolonged exposure to a female face, faces that had previously seemed androgynous are more likely to be judged as male. Similarly, after prolonged exposure to a face with expanded features, faces that had previously seemed normal are more likely to be judged as having contracted features. These facial aftereffects have both been attributed to the impact of adaptation upon a norm-based opponent code, akin to low-level analyses of colour. While a good deal of evidence is consistent with this, some recent data is contradictory, motivating a more rigorous test. In behaviourally matched tasks we compared the characteristics of aftereffects generated by adapting to colour, to expanded or contracted faces, and to male or female faces. In our experiments opponent coding predicted that the appearance of the adapting image should change and that adaptation should induce symmetrical shifts of two category boundaries. This combination of predictions was firmly supported for colour adaptation, somewhat supported for facial distortion aftereffects, but not supported for facial gender aftereffects. Interestingly, the two face aftereffects we tested generated discrepant patterns of response shifts. Our data suggest that superficially similar aftereffects can ensue from mechanisms that differ qualitatively, and therefore that not all high-level categorical face aftereffects can be attributed to a common coding strategy.
Keyword Face aftereffects
Opponent coding
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Psychology Publications
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Created: Sun, 02 Sep 2012, 00:18:16 EST by System User on behalf of School of Psychology