Malleability of the self: electrophysiological correlates of the enfacement illusion

Ilaria Bufalari, Anna Laura Sforza, Francesco Di Russo, Lucia Mannetti, Salvatore Maria Aglioti

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Self-face representation is fundamentally important for self-identity and self-consciousness. Given its role in preserving identity over time, self-face processing is considered as a robust and stable process. Yet, recent studies indicate that simple psychophysics manipulations may change how we process our own face. Specifically, experiencing tactile facial stimulation while seeing similar synchronous stimuli delivered to the face of another individual seen as in a mirror, induces ‘enfacement’ illusion, i.e. the subjective experience of ownership of the other’s face and a bias in attributing to the self, facial features of the other person. Here we recorded visual Event-Related Potentials elicited by the presentation of self, other and morphed faces during a self-other discrimination task performed immediately after participants received synchronous and control asynchronous Interpersonal Multisensory Stimulation (IMS). We found that self-face presentation after synchronous as compared to asynchronous stimulation significantly reduced the late positive potential (LPP; 450–750 ms), a reliable electrophysiological marker of self-identification processes. Additionally, enfacement cancelled out the differences in LPP amplitudes produced by self- and other-face during the control condition. These findings represent the first direct neurophysiological evidence that enfacement may affect self-face processing and pave the way to novel paradigms for exploring defective self-representation and self-other interactions.

Original languageEnglish
Article number1682
JournalScientific Reports
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2019

Fingerprint

Psychophysics
Ownership
Touch
Consciousness
Evoked Potentials
Discrimination (Psychology)

ASJC Scopus subject areas

  • General

Cite this

Malleability of the self : electrophysiological correlates of the enfacement illusion. / Bufalari, Ilaria; Sforza, Anna Laura; Di Russo, Francesco; Mannetti, Lucia; Aglioti, Salvatore Maria.

In: Scientific Reports, Vol. 9, No. 1, 1682, 01.12.2019.

Research output: Contribution to journalArticle

Bufalari, Ilaria ; Sforza, Anna Laura ; Di Russo, Francesco ; Mannetti, Lucia ; Aglioti, Salvatore Maria. / Malleability of the self : electrophysiological correlates of the enfacement illusion. In: Scientific Reports. 2019 ; Vol. 9, No. 1.
@article{f7aea6e9d2214bca919a5bc7d667e3aa,
title = "Malleability of the self: electrophysiological correlates of the enfacement illusion",
abstract = "Self-face representation is fundamentally important for self-identity and self-consciousness. Given its role in preserving identity over time, self-face processing is considered as a robust and stable process. Yet, recent studies indicate that simple psychophysics manipulations may change how we process our own face. Specifically, experiencing tactile facial stimulation while seeing similar synchronous stimuli delivered to the face of another individual seen as in a mirror, induces ‘enfacement’ illusion, i.e. the subjective experience of ownership of the other’s face and a bias in attributing to the self, facial features of the other person. Here we recorded visual Event-Related Potentials elicited by the presentation of self, other and morphed faces during a self-other discrimination task performed immediately after participants received synchronous and control asynchronous Interpersonal Multisensory Stimulation (IMS). We found that self-face presentation after synchronous as compared to asynchronous stimulation significantly reduced the late positive potential (LPP; 450–750 ms), a reliable electrophysiological marker of self-identification processes. Additionally, enfacement cancelled out the differences in LPP amplitudes produced by self- and other-face during the control condition. These findings represent the first direct neurophysiological evidence that enfacement may affect self-face processing and pave the way to novel paradigms for exploring defective self-representation and self-other interactions.",
author = "Ilaria Bufalari and Sforza, {Anna Laura} and {Di Russo}, Francesco and Lucia Mannetti and Aglioti, {Salvatore Maria}",
year = "2019",
month = "12",
day = "1",
doi = "10.1038/s41598-018-38213-y",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

TY - JOUR

T1 - Malleability of the self

T2 - electrophysiological correlates of the enfacement illusion

AU - Bufalari, Ilaria

AU - Sforza, Anna Laura

AU - Di Russo, Francesco

AU - Mannetti, Lucia

AU - Aglioti, Salvatore Maria

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Self-face representation is fundamentally important for self-identity and self-consciousness. Given its role in preserving identity over time, self-face processing is considered as a robust and stable process. Yet, recent studies indicate that simple psychophysics manipulations may change how we process our own face. Specifically, experiencing tactile facial stimulation while seeing similar synchronous stimuli delivered to the face of another individual seen as in a mirror, induces ‘enfacement’ illusion, i.e. the subjective experience of ownership of the other’s face and a bias in attributing to the self, facial features of the other person. Here we recorded visual Event-Related Potentials elicited by the presentation of self, other and morphed faces during a self-other discrimination task performed immediately after participants received synchronous and control asynchronous Interpersonal Multisensory Stimulation (IMS). We found that self-face presentation after synchronous as compared to asynchronous stimulation significantly reduced the late positive potential (LPP; 450–750 ms), a reliable electrophysiological marker of self-identification processes. Additionally, enfacement cancelled out the differences in LPP amplitudes produced by self- and other-face during the control condition. These findings represent the first direct neurophysiological evidence that enfacement may affect self-face processing and pave the way to novel paradigms for exploring defective self-representation and self-other interactions.

AB - Self-face representation is fundamentally important for self-identity and self-consciousness. Given its role in preserving identity over time, self-face processing is considered as a robust and stable process. Yet, recent studies indicate that simple psychophysics manipulations may change how we process our own face. Specifically, experiencing tactile facial stimulation while seeing similar synchronous stimuli delivered to the face of another individual seen as in a mirror, induces ‘enfacement’ illusion, i.e. the subjective experience of ownership of the other’s face and a bias in attributing to the self, facial features of the other person. Here we recorded visual Event-Related Potentials elicited by the presentation of self, other and morphed faces during a self-other discrimination task performed immediately after participants received synchronous and control asynchronous Interpersonal Multisensory Stimulation (IMS). We found that self-face presentation after synchronous as compared to asynchronous stimulation significantly reduced the late positive potential (LPP; 450–750 ms), a reliable electrophysiological marker of self-identification processes. Additionally, enfacement cancelled out the differences in LPP amplitudes produced by self- and other-face during the control condition. These findings represent the first direct neurophysiological evidence that enfacement may affect self-face processing and pave the way to novel paradigms for exploring defective self-representation and self-other interactions.

UR - http://www.scopus.com/inward/record.url?scp=85061226034&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061226034&partnerID=8YFLogxK

U2 - 10.1038/s41598-018-38213-y

DO - 10.1038/s41598-018-38213-y

M3 - Article

C2 - 30737445

AN - SCOPUS:85061226034

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 1682

ER -