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  4. Illusory hand ownership in a patient with personal neglect for the upper limb, but no somatoparaphenia
 
research article

Illusory hand ownership in a patient with personal neglect for the upper limb, but no somatoparaphenia

Ronchi, Roberta  
•
Heydrich, Lukas  
•
Serino, Andrea  
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2018
Journal of Neuropsychology

The symptoms of patients with left personal neglect are characterized by inattention towards contralesional (left) body parts while at the same time explicitly ascertaining ownership for the neglected hemibody. It is currently unknown if personal neglect is associated with more subtle or implicit disturbances of own body perception and body ownership as measured with the rubber hand illusion. In this study, we report data from a patient with a right hemispheric lesion and personal neglect, without associated somatosensory deficits. We administered to the patient (and to 12 age-matched controls) the rubber hand illusion paradigm to the right and left hands, to elicit illusory ownership for a fake hand, before and after recovery from personal neglect for the left arm. In a first session, run when the patient showed personal neglect affecting the left arm, he experienced a significantly enhanced subjective illusion of embodiment for the left fake hand as compared to the right hand (as assessed through a standard questionnaire). After recovery from personal neglect for the left arm (second session), the results of the left and right rubber hand illusion experiments were comparable, with no modulation of hand ownership. We argue that personal neglect may consist not only in an inattentional disorder, but also in a deficit of multisensory body representation characterized by a high sensitivity to experimental manipulations of subjective aspects of body ownership.

  • Details
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Type
research article
DOI
10.1111/jnp.12123
Author(s)
Ronchi, Roberta  
Heydrich, Lukas  
Serino, Andrea  
Blanke, Olaf  
Date Issued

2018

Publisher

British Psychological Society

Published in
Journal of Neuropsychology
Volume

12

Issue

3

Start page

442

End page

462

Subjects

body representation

•

ownership

•

personal neglect

•

rubber hand illusion

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CNP  
LNCO  
Available on Infoscience
June 20, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/138516
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