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Multisensory stimulation modulates perceptual and post perceptual face representations: Evidence from event-related potentials.

Estudillo, A. J., Kaufmann, J. M., Bindemann, M. and Schweinberger, S. R., 2018. Multisensory stimulation modulates perceptual and post perceptual face representations: Evidence from event-related potentials. European Journal of Neuroscience, 48 (5), 2259 -2271.

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DOI: 10.1111/ejn.14112

Abstract

Seeing a face being touched in spatial and temporal synchrony with the own face produces a bias in self-recognition, whereby the other face becomes more likely to be perceived as the self. The present study employed event-related potentials to explore whether this enfacement effect reflects initial face encoding, enhanced distinctiveness of the enfaced face, modified self-identity representations, or even later processing stages that are associated with the emotional processing of faces. Participants were stroked in synchrony or asynchrony with an unfamiliar face they observed on a monitor in front of them, in a situation approximating a mirror image. Subsequently, event-related potentials were recorded during the presentation of (a) a previously synchronously stimulated face, (b) an asynchronously stimulated face, (c) observers' own face, (d) filler faces, and (e) a to-be-detected target face, which required a response. Observers reported a consistent enfacement illusion after synchronous stimulation. Importantly, the synchronously stimulated face elicited more prominent N170 and P200 responses than the asynchronously stimulated face. By contrast, similar N250 and P300 responses were observed in these conditions. These results suggest that enfacement modulates early neural correlates of face encoding and facial prototypicality, rather than identity self-representations and associated emotional processes.

Item Type:Article
ISSN:1460-9568
Uncontrolled Keywords:body ownership; enfacement; multisensory stimulation; own face recognition; Adult; Evoked Potentials; Face; Facial Recognition; Female; Humans; Illusions; Male; Pattern Recognition, Visual; Physical Stimulation; Recognition, Psychology; Self Concept; Touch; Touch Perception; Young Adult
Group:Faculty of Science & Technology
ID Code:35328
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:26 Mar 2021 16:17
Last Modified:15 Aug 2021 08:28

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