PMID- 19738900
OWN - NLM
STAT- MEDLINE
DCOM- 20100201
LR  - 20240326
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 4
IP  - 9
DP  - 2009 Sep 7
TI  - Losing one's hand: visual-proprioceptive conflict affects touch perception.
PG  - e6920
LID - 10.1371/journal.pone.0006920 [doi]
LID - e6920
AB  - BACKGROUND: While the sense of bodily ownership has now been widely investigated 
      through the rubber hand illusion (RHI), very little is known about the sense of 
      disownership. It has been hypothesized that the RHI also affects the ownership 
      feelings towards the participant's own hand, as if the rubber hand replaced the 
      participant's actual hand. Somatosensory changes observed in the participants' 
      hand while experiencing the RHI have been taken as evidence for disownership of 
      their real hand. Here we propose a theoretical framework to disambiguate whether 
      such somatosensory changes are to be ascribed to the disownership of the real 
      hand or rather to the anomalous visuo-proprioceptive conflict experienced by the 
      participant during the RHI. METHODOLOGY/PRINCIPAL FINDINGS: In experiment 1, 
      reaction times (RTs) to tactile stimuli delivered to the participants' hand 
      slowed down following the establishment of the RHI. In experiment 2, the 
      misalignment of visual and proprioceptive inputs was obtained via prismatic 
      displacement, a situation in which ownership of the seen hand was doubtless. This 
      condition slowed down the participants' tactile RTs. Thus, similar effects on 
      touch perception emerged following RHI and prismatic displacement. Both 
      manipulations also induced a proprioceptive drift, toward the fake hand in the 
      first experiment and toward the visual position of the participants' hand in the 
      second experiment. CONCLUSIONS/SIGNIFICANCE: These findings reveal that 
      somatosensory alterations in the experimental hand resulting from the RHI result 
      from cross-modal mismatch between the seen and felt position of the hand. As 
      such, they are not necessarily a signature of disownership.
FAU - Folegatti, Alessia
AU  - Folegatti A
AD  - UMR-S 864 Espace et Action, INSERM, Bron, France. Alessia.Folegatti@inserm.fr
FAU - de Vignemont, Frederique
AU  - de Vignemont F
FAU - Pavani, Francesco
AU  - Pavani F
FAU - Rossetti, Yves
AU  - Rossetti Y
FAU - Farne, Alessandro
AU  - Farne A
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20090907
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
SB  - IM
MH  - Adult
MH  - Female
MH  - Hand/*physiology
MH  - Humans
MH  - Male
MH  - Models, Theoretical
MH  - *Proprioception
MH  - Psychomotor Performance
MH  - Space Perception
MH  - Touch
MH  - Touch Perception/*physiology
MH  - *Visual Perception
PMC - PMC2732904
COIS- Competing Interests: The authors have declared that no competing interests exist.
EDAT- 2009/09/10 06:00
MHDA- 2010/02/02 06:00
PMCR- 2009/09/07
CRDT- 2009/09/10 06:00
PHST- 2009/05/05 00:00 [received]
PHST- 2009/07/27 00:00 [accepted]
PHST- 2009/09/10 06:00 [entrez]
PHST- 2009/09/10 06:00 [pubmed]
PHST- 2010/02/02 06:00 [medline]
PHST- 2009/09/07 00:00 [pmc-release]
AID - 09-PONE-RA-10147R1 [pii]
AID - 10.1371/journal.pone.0006920 [doi]
PST - epublish
SO  - PLoS One. 2009 Sep 7;4(9):e6920. doi: 10.1371/journal.pone.0006920.