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Transfer of peripersonal space to a virtual body in young adults and exploration of adult age differences

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Titel: Transfer of peripersonal space to a virtual body in young adults and exploration of adult age differences
Autoren: Dariusz O’Leary, Yichen Fan, Ina Schattenberg, Andrea Serino, Shu-Chen Li
Quelle: Exp Brain Res
Experimental brain research, vol. 243, no. 8, pp. 189
Verlagsinformationen: Springer Science and Business Media LLC, 2025.
Publikationsjahr: 2025
Schlagwörter: Humans, Female, Male, Personal Space, Aged, Adult, Young Adult, Virtual Reality, Aging/physiology, Aging/psychology, Aged, 80 and over, Adolescent, Space Perception/physiology, Illusions/physiology, Body Image, Touch Perception/physiology, Visual Perception/physiology, Transfer, Psychology/physiology, Aging, Embodiment, Full-body illusion, Multisensory integration, Peripersonal space, Virtual reality, Research Article
Beschreibung: Peripersonal space (PPS) is known as the representation of the area around the body. Past research has shown that inducing a full-body illusion (FBI) can lead to PPS extending at the physical body location. However, it is unclear whether such illusions may also result in PPS transferring to a virtual body that is separate from the physical body. Furthermore, whether this effect may change over the course of natural aging is currently unknown. In three experiments, we investigated whether inducing an FBI using an avatar presented from a third-person perspective in virtual reality, results in PPS transferring to the avatar, and whether this effect differs between young (YAs; 18–29 years) and older adults (OAs; 65–83 years). We utilized a manipulation involving either synchronous or asynchronous stroking for FBI induction and assessed ratings of avatar ownership as a subjective indicator of embodiment. Meanwhile effects on PPS were measured by differences in multisensory facilitation within a visuo-tactile task. While we found significantly stronger ownership ratings for synchronous compared to asynchronous stroking in both YAs and OAs, this difference, as well as the degree of ownership, was significantly weaker for OAs. Moreover, while a distance-dependent modulation of multisensory facilitation reflecting PPS at the avatar’s location was observed in two samples of YAs, this effect was absent in OAs. These findings suggest that PPS in YAs can transfer to an avatar in virtual reality, while age-related differences in susceptibility to the FBI might contribute to a lack of this effect in OAs.
Publikationsart: Article
Other literature type
Dateibeschreibung: application/pdf
Sprache: English
ISSN: 1432-1106
0014-4819
DOI: 10.1007/s00221-025-07132-6
Zugangs-URL: http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_D125E41898409
https://serval.unil.ch/resource/serval:BIB_D125E4189840.P001/REF.pdf
https://serval.unil.ch/notice/serval:BIB_D125E4189840
Rights: CC BY
Dokumentencode: edsair.doi.dedup.....dc0edede82997b7a399f91e7c4d6d80e
Datenbank: OpenAIRE
Beschreibung
Abstract:Peripersonal space (PPS) is known as the representation of the area around the body. Past research has shown that inducing a full-body illusion (FBI) can lead to PPS extending at the physical body location. However, it is unclear whether such illusions may also result in PPS transferring to a virtual body that is separate from the physical body. Furthermore, whether this effect may change over the course of natural aging is currently unknown. In three experiments, we investigated whether inducing an FBI using an avatar presented from a third-person perspective in virtual reality, results in PPS transferring to the avatar, and whether this effect differs between young (YAs; 18–29 years) and older adults (OAs; 65–83 years). We utilized a manipulation involving either synchronous or asynchronous stroking for FBI induction and assessed ratings of avatar ownership as a subjective indicator of embodiment. Meanwhile effects on PPS were measured by differences in multisensory facilitation within a visuo-tactile task. While we found significantly stronger ownership ratings for synchronous compared to asynchronous stroking in both YAs and OAs, this difference, as well as the degree of ownership, was significantly weaker for OAs. Moreover, while a distance-dependent modulation of multisensory facilitation reflecting PPS at the avatar’s location was observed in two samples of YAs, this effect was absent in OAs. These findings suggest that PPS in YAs can transfer to an avatar in virtual reality, while age-related differences in susceptibility to the FBI might contribute to a lack of this effect in OAs.
ISSN:14321106
00144819
DOI:10.1007/s00221-025-07132-6