Subjective feeling of re‐experiencing past events using immersive virtual reality prevents a loss of episodic memory

Bréchet, Lucie; Hausmann, Sebastien B.; Mange, Robin; Herbelin, Bruno; Blanke, Olaf; Serino, Andrea

doi:10.1002/brb3.1571

Cited by 34 publications

(42 citation statements)

References 44 publications

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“…2c,d). Previous work has revealed that modulations of BSC not only alter body- and self-related processes 24-26 , but also affect spatial representation and episodic memory 27,29,65-67 . Second, we extended previous BSC research to the field of spatial navigation and grid cells and successfully modulated BSC by enhancing self-identification with the avatar during spatial navigation 40-43,68,69 .…”

Section: Discussionmentioning

confidence: 99%

Sense of self impacts spatial navigation and hexadirectional coding in human entorhinal cortex

Moon

Gauthier

Park

et al. 2020

Preprint

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Grid cells in entorhinal cortex (EC) encode an individual's location in space and rely on environmental cues and self-motion cues derived from the individual's body. Body-derived signals are also primary signals for the sense of self as located in space (i.e. bodily self-consciousness, BSC). However, it is currently unknown whether BSC impacts grid cell activity and how such changes relate to experimental modulations of BSC. Integrating BSC with a spatial navigation task and an fMRI measure to detect grid cell-like representation (GCLR) in humans, we report a robust GCLR modulation in EC when participants navigated during an enhanced BSC state. These changes were further associated with improved spatial navigation performance and increased activity in posterior parietal and retrosplenial cortex. These data link entorhinal grid cell activity with BSC and show that BSC modulates ego- versus allocentric spatial processes about an individual's location in space in a distributed spatial navigation system.

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Section: Discussionmentioning

confidence: 99%

Sense of self impacts spatial navigation and hexadirectional coding in human entorhinal cortex

Moon

Gauthier

Park

et al. 2020

Preprint

Self Cite

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“…Previous research has suggested that coherent perceptions of bodily self in space are critical for optimal memory performance, implying that we are better able to remember information if it is encountered when we have a consistent sense of our bodies to ground our experiences ( Bergouignan et al., 2014 ; Bréchet et al., 2019 , 2020 ; Tacikowski et al., 2020 ). However, these studies have either not investigated how the fundamental perception of one's body as belonging to oneself influences memory for lifelike events, and/or failed to provide clear measures of memory accuracy and key subjective properties of memory retrieval (i.e., reliving, emotional intensity, and belief in memory accuracy).…”

Section: Introductionmentioning

confidence: 99%

Perceptual illusion of body-ownership within an immersive realistic environment enhances memory accuracy and re-experiencing

Iriye

Ehrsson

2022

iScience

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Summary Our bodies provide a necessary scaffold for memories of past events. Yet, we are just beginning to understand how feelings of one's own body during the encoding of realistic events shape memory. Participants formed memories for immersive, lifelike events by watching pre-recorded 3D videos that involved a first-person view of a mannequin's body through head mounted displays. We manipulated feelings of body ownership over the mannequin using a perceptual full-body illusion. Participants completed cued recall questions and subjective ratings (i.e., degree of reliving, emotional intensity, vividness, and belief in memory accuracy) for each video immediately following encoding and one week later. Sensing the mannequin's body as one's own during encoding enhanced the following factors: memory accuracy across testing points, immediate reliving, delayed emotional intensity, vividness, and belief in memory accuracy. These findings demonstrate that a basic sense of bodily selfhood provides a crucial foundation for the accurate reliving of the past.

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“…The multisensory body representation that underpins the core bodily self is produced through the continuous integration of information from multimodal sensory inputs at the level of cortical multisensory association areas (Blanke et al, 2015;Guterstam, Björnsdotter, Bergouignan, et al, 2015;Preston & Ehrsson, 2016). This represents a major advantage over virtual reality experiments conducted using avatars, where the sense of bodily self and its location in space is not explicitly controlled and manipulated, and illusory out-body experiences are not elicited as in the current study (Bréchet et al, 2020;Iriye & St. Jacques, 2020;Mooren et al, 2016). Our experimental manipulation consisted of spatially and temporally correlated visual, auditory, and somatosensory signals (Bergouignan et al, 2014;Bergstrom et al, 2017;Ehrsson, 2007;Guterstam & Ehrsson, 2012), which caused changes in the central perceptual construct of the participant's own body in space.…”

Section: Discussionmentioning

confidence: 97%

Out-of-body memory encoding causes third-person perspective at recall

Bergouignan

Nyberg

Ehrsson

2021

Journal of Cognitive Psychology

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Sigmund Freud famously noted some memories are recalled with a perspective of "an observer from outside the scene". According to Freud-and most memory researchers today-the third-person perspective occurs due to reconstructive processes at recall. An alternative possibility is that the third-person perspective have been adopted when the actual event is experienced and later recalled in its original form. Here we test this hypothesis using a perceptual out-of-body illusion during the encoding of real events. Participants took part in a social interaction while experiencing an out-ofbody illusion where they viewed the event and their own body from a third-person perspective. In recall sessions ∼1 week later, events encoded in the out-of-body compared to the in-body control condition were significantly less recalled from a firstperson perspective. An out-of-body experience leads to more third-person perspective during recollection.

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Subjective feeling of re‐experiencing past events using immersive virtual reality prevents a loss of episodic memory

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 34 publications

References 44 publications

Sense of self impacts spatial navigation and hexadirectional coding in human entorhinal cortex

Sense of self impacts spatial navigation and hexadirectional coding in human entorhinal cortex

Perceptual illusion of body-ownership within an immersive realistic environment enhances memory accuracy and re-experiencing

Out-of-body memory encoding causes third-person perspective at recall

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