The anatomo-clinical picture of the pathological embodiment over someone else's body part after stroke.

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Lorenzo PiaFrancesca Garbarini

Abstract

Recently, a monothematic delusion of body ownership due to brain damage (i.e., the embodiment of someone else's body part within the patient's sensorimotor system) has been extensively investigated. Here we aimed at defining in-depth the clinical features and the neural correlates of the delusion. Ninety-six stroke patients in a sub-acute or chronic phase of the illness were assessed with a full ad-hoc protocol to evaluate the embodiment of an alien arm under different conditions. A sub-group of seventy-five hemiplegic patients was also evaluated for the embodiment of the movements of the alien arm. Fifty-five patients were studied to identify the neural bases of the delusion by means of voxel-based lesion-symptom mapping approach. Our results show that, in forty percent of the whole sample, simply viewing the alien arm triggered the delusion, but only if it was a real human arm and that was seen from a 1st person perspective in an anatomically-correct position. In the hemiplegic sub-group, the presence of the embodiment of the alien arm was always accompanied by the embodiment of its passive and active movements. Furthermore, the delusion was significantly associated to primary proprioceptive deficits and to damages of the cor...Continue Reading

Citations

Dec 12, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Mattia GaliganiFrancesca Garbarini
Jun 27, 2021·Psychological Research·Maria PyasikLorenzo Pia

❮ Previous
Next ❯

Related Concepts

Related Feeds

Brain Injury & Trauma

brain injury after impact to the head is due to both immediate mechanical effects and delayed responses of neural tissues.

Related Papers

ANS. Advances in Nursing Science
C Price
Theoretical Medicine and Bioethics
J L Kissell
Dementia
Wendy MartinRichard Ward
BMJ : British Medical Journal
J Beadle
© 2021 Meta ULC. All rights reserved