The expressions of strangers: our identity-independent representation of facial expression

Journal of Vision
Andrew L Skinner, Christopher P Benton

Abstract

Evidence suggests that underlying the human system processing facial expressions are two types of representation of expression: one dependent on identity and the other independent of identity. We recently presented findings indicating that identity-dependent representations are encoded using a prototype-referenced scheme, in a manner notably similar to that proposed for facial identity. Could it be that identity-independent representations are encoded this way too? We investigated this by adapting participant to anti-expressions and asking them to categorize the expression aftereffect in a prototype probe that was either the same (congruent) or different (incongruent) identity to that of the adapter. To distinguish between encoding schemes, we measured how aftereffect magnitude changed in response to variations in the strength of adapters. The increase in aftereffect magnitude with adapter strength characteristic of prototype-referenced encoding was observed in both congruent and, crucially, incongruent conditions. We conclude that identity-independent representations of expression are indeed encoded using a prototype-referenced scheme. The striking similarity between the encoding of facial identity and both representations of ...Continue Reading

Citations

Aug 21, 2012·PloS One·Dennis HummelHarald M Mohr
Dec 3, 2014·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Pál VakliGyula Kovács
Jan 1, 2013·Vision Research·Philip J Pell, Anne Richards
Jun 16, 2017·Psychonomic Bulletin & Review·Sang Wook Hong, K Lira Yoon
Sep 9, 2018·Neuropsychologia·O Scott GwinnMichael A Webster
Mar 16, 2021·Developmental Neuropsychology·Caitlin M HudacSara Jane Webb

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