Visual perception of one's own body under vestibular stimulation using biometric self-avatars in virtual reality.
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2019
2019
Historique:
received:
20
12
2018
accepted:
04
03
2019
entrez:
19
3
2019
pubmed:
19
3
2019
medline:
18
12
2019
Statut:
epublish
Résumé
Vestibular input is projected to "multisensory (vestibular) cortex" where it converges with input from other sensory modalities. It has been assumed that this multisensory integration enables a continuous perception of state and presence of one's own body. The present study thus asked whether or not vestibular stimulation may impact this perception. We used an immersive virtual reality setup to realistically manipulate the length of extremities of first person biometric avatars. Twenty-two healthy participants had to adjust arms and legs to their correct length from various start lengths before, during, and after vestibular stimulation. Neither unilateral caloric nor galvanic vestibular stimulation had a modulating effect on the perceived size of own extremities. Our results suggest that vestibular stimulation does not directly influence the explicit somatosensory representation of our body. It is possible that in non-brain-damaged, healthy subjects, changes in whole body size perception are principally not mediated by vestibular information. Alternatively, visual feedback and/or memory may dominate multisensory integration and thereby override possibly existing modulations of body perception by vestibular stimulation. The present observations suggest that multisensory integration and not the processing of a single sensory input is the crucial mechanism in generating our body representation in relation to the external world.
Sections du résumé
BACKGROUND AND PURPOSE
Vestibular input is projected to "multisensory (vestibular) cortex" where it converges with input from other sensory modalities. It has been assumed that this multisensory integration enables a continuous perception of state and presence of one's own body. The present study thus asked whether or not vestibular stimulation may impact this perception.
METHODS
We used an immersive virtual reality setup to realistically manipulate the length of extremities of first person biometric avatars. Twenty-two healthy participants had to adjust arms and legs to their correct length from various start lengths before, during, and after vestibular stimulation.
RESULTS
Neither unilateral caloric nor galvanic vestibular stimulation had a modulating effect on the perceived size of own extremities.
CONCLUSION
Our results suggest that vestibular stimulation does not directly influence the explicit somatosensory representation of our body. It is possible that in non-brain-damaged, healthy subjects, changes in whole body size perception are principally not mediated by vestibular information. Alternatively, visual feedback and/or memory may dominate multisensory integration and thereby override possibly existing modulations of body perception by vestibular stimulation. The present observations suggest that multisensory integration and not the processing of a single sensory input is the crucial mechanism in generating our body representation in relation to the external world.
Identifiants
pubmed: 30883577
doi: 10.1371/journal.pone.0213944
pii: PONE-D-18-36346
pmc: PMC6422330
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0213944Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
Références
J Neurol Neurosurg Psychiatry. 1992 Apr;55(4):332-3
pubmed: 1583527
Cortex. 1992 Jun;28(2):203-8
pubmed: 1499306
Exp Brain Res. 2003 Jan;148(1):117-27
pubmed: 12478402
J Exp Psychol Hum Percept Perform. 2009 Dec;35(6):1649-60
pubmed: 19968426
PLoS One. 2015 Aug 06;10(8):e0135147
pubmed: 26247469
Neuropsychiatry Neuropsychol Behav Neurol. 2001 Jul-Sep;14(3):190-6
pubmed: 11513103
Exp Brain Res. 1996 May;109(2):333-42
pubmed: 8738380
Spinal Cord. 2001 Feb;39(2):85-7
pubmed: 11402363
Front Integr Neurosci. 2016 Mar 11;10:14
pubmed: 27013995
Eur J Neurosci. 2011 Oct;34(8):1337-44
pubmed: 21978189
Cortex. 1995 Sep;31(3):589-93
pubmed: 8536486
J Comp Neurol. 1994 Jan 15;339(3):421-37
pubmed: 7510732
Neuropsychologia. 1991;29(10):1029-31
pubmed: 1762671
Brain. 2001 Jun;124(Pt 6):1182-96
pubmed: 11353734
PLoS One. 2015 Apr 13;10(4):e0124573
pubmed: 25875819
J Int Neuropsychol Soc. 2005 Nov;11(7):925-9
pubmed: 16519272
Front Integr Neurosci. 2014 Apr 17;8:31
pubmed: 24860446
Psychol Med. 2018 Mar;48(4):642-653
pubmed: 28745268
Proc Natl Acad Sci U S A. 2010 Jun 29;107(26):11727-32
pubmed: 20547858
J Neurol Neurosurg Psychiatry. 2006 Jun;77(6):760-6
pubmed: 16464901
Neuropsychologia. 2012 Jul;50(8):1830-7
pubmed: 22561888
Cortex. 1998 Apr;34(2):253-61
pubmed: 9606590
Multisens Res. 2015;28(5-6):525-57
pubmed: 26595955
Brain. 2006 Feb;129(Pt 2):293-305
pubmed: 16371409
Exp Brain Res. 2003 Nov;153(2):231-8
pubmed: 12961052
Soc Psychol Personal Sci. 2017 May;8(4):355-362
pubmed: 28736600
Neuropsychologia. 2015 Mar;69:140-7
pubmed: 25619847
Stroke. 2008 Feb;39(2):486-8
pubmed: 18162622
Front Hum Neurosci. 2013 Mar 21;7:83
pubmed: 23519597
Neuroimage. 2012 Mar;60(1):162-9
pubmed: 22209784
J Neurosci. 2003 Aug 20;23(20):7510-5
pubmed: 12930789
Neuropsychologia. 2012 May;50(6):1010-7
pubmed: 21756924
Sci Rep. 2017 Apr 21;7(1):1022
pubmed: 28432316
J Cogn Neurosci. 2005 Apr;17(4):543-53
pubmed: 15829076
J Comp Neurol. 1992 Dec 15;326(3):375-401
pubmed: 1281845
Multisens Res. 2015;28(5-6):559-79
pubmed: 26595956
Cyberpsychol Behav Soc Netw. 2018 May;21(5):304-310
pubmed: 29762066
J Neurol. 2005 Oct;252(10):1194-200
pubmed: 15895307
Behav Res Methods. 2007 May;39(2):175-91
pubmed: 17695343
Neuron. 2005 Aug 18;47(4):581-92
pubmed: 16102540
Conscious Cogn. 2010 Mar;19(1):33-47
pubmed: 20047844
Neuropsychologia. 1987;25(5):775-82
pubmed: 3501552
Nature. 1998 Feb 19;391(6669):756
pubmed: 9486643
Neurology. 1985 Jul;35(7):1019-24
pubmed: 4010940
Perception. 1992;21(6):803-12
pubmed: 1297983
Neuropsychologia. 2013 Jul;51(8):1445-52
pubmed: 23624312
Cortex. 2013 Mar;49(3):748-58
pubmed: 22385524