Neural correlates of priming and adaptation in familiar face perception.
Priming (PR) and adaptation-related aftereffects (AEs) are two phenomena when recent perceptual experiences alter face perception. While AEs are often reflected in contrastive perceptual biases, PR typically leads to behavioural facilitation. Previous research suggests that both phenomena modulate b...
| Publicado en: | Cortex: A Journal Devoted to the Study of the Nervous System & Behavior Vol. 49; no. 7; pp. 1963 - 1978 |
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| Autores principales: | , , , |
| Formato: | research Journal Article |
| Publicado: |
Masson SPA
2013 Jul-Aug
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=107906585&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 107906585 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00109452 GMP jtl: Cortex: A Journal Devoted to the Study of the Nervous System & Behavior issn: 00109452 maglogo: N pubinfo: dt: 2013 Jul-Aug vid: 49 iid: 7 pid: 12473 pub: Masson SPA artinfo: ui: 107906585 107906585 2012173669 10.1016/j.cortex.2012.08.012 NLM23021070 107906585 ppf: 1963 ppct: 15 formats: tig: atl: Neural correlates of priming and adaptation in familiar face perception. aug: au: Walther, Christian Schweinberger, Stefan R Kaiser, Daniel Kovács, Gyula affil: DFG Research Unit Person Perception, Friedrich-Schiller-University of Jena, Germany; Institute of Psychology, University of Regensburg, Regensburg, Germany. Electronic address: christian.walther@uni-jena.de. sug: subj: Adaptation, Psychological Face Memory Visual Perception Physiology Adult Analysis of Variance Electroencephalography Evoked Potentials Physiology Public Figures Female Perception Human Male Neuronal Plasticity Physiology Physical Stimulation Psychomotor Performance Reaction Time Physiology Young Adult Adult: 19-44 years Female Male ab: Priming (PR) and adaptation-related aftereffects (AEs) are two phenomena when recent perceptual experiences alter face perception. While AEs are often reflected in contrastive perceptual biases, PR typically leads to behavioural facilitation. Previous research suggests that both phenomena modulate broadly similar components of the event-related potentials (ERPs). To disentangle the underlying neural mechanisms of PR and AE, we induced both effects within the same subjects and paradigm. We presented pairs of stimuli, where the first (S1) was a famous face (identity A, B or C), a morph between two famous faces (50/50% A/B), or a Fourier phase randomized face (as a control stimulus matched for low-level visual information) and the second (S2) was a face drawn from morph continua between identity A and B. Participants' performance in matching S2s to either A or B revealed contrastive aftereffects for ambiguous S2 faces, which were more likely perceived as identity B following the presentation of A and vice versa. Unambiguous S2 faces, however, showed PR, with significantly shorter response times, as well as higher classification performance, for identity-congruent than for incongruent S1-S2 pairs. Analyses of the simultaneously recorded ERPs revealed clear categorical adaptation at around 155-205 msec post-stimulus onset. We also found amplitude modulations for unambiguous S2 faces following identity-congruent S1 faces, related to PR, starting at 90 msec and being the most pronounced at around 205-255 msec. For ambiguous S2 faces, we also observed an ERP effect at around 205-255 msec that was correlated with behavioural AEs. Our results show that face PR and AEs are present simultaneously within a single paradigm, depending on the ambiguity of S2 faces and/or on the similarity of S1 and S2, and suggest that exclusive mechanisms might underlie both PR and AEs and that object-category and identity processing might run in parallel during face processing. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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