Tight Link Between Our Sense of Limb Ownership and Self-Awareness of Actions.
Abstract
BACKGROUND AND PURPOSE: Hemiparetic stroke patients with disturbed awareness for their motor weakness (anosognosia for hemiparesis/-plegia [AHP]) may exhibit further abnormal attitudes toward or perceptions of the affected limb(s). The present study investigated the clinical relationship and the anatomy of such abnormal attitudes and AHP. METHODS: In a new series of 79 consecutively admitted acute stroke patients with right brain damage and hemiparesis/-plegia, different types of abnormal attitudes toward the hemiparetic/plegic limb (asomatognosia, somatoparaphrenia, anosodiaphoria, misoplegia, personification, kinaesthetic hallucinations, supernumerary phantom limb) were investigated. RESULTS: Ninty-two percent of the patients with AHP showed additional "disturbed sensation of limb ownership" (DSO) for the paretic/plegic limb. The patients had the feeling that their contralesional limb(s) do not belong to their body or even belong to another person. Analysis of lesion location revealed that the right posterior insula is a crucial structure involved in these phenomena. CONCLUSIONS: DSO for hemiparetic/-plegic limbs and AHP are tightly linked both clinically and anatomically. The right posterior insula seems to be a crucial structure involved in the genesis of our sense of limb ownership and self-awareness of actions.
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Neurological observations suggest that certain brain regions might be responsible for generating the habitual experience of being located within one's body and of owning it, but they tell little about the underlying processes.
“Although these neurological observations suggest that certain brain regions might be responsible for generating the habitual experience of being located within one's body and of owning it, they tell us little about the underlying processes.”
From If I were you: Perceptual illusion of body swapping (2008) · cites this paper as [12]
People with pathological conditions affecting frontal and parietal lobes can sometimes fail to recognise their limbs as belonging to themselves.
“From neurology we know that these functions can break down as people with pathological conditions affecting frontal and parietal lobes can sometimes fail to recognise their limbs as belonging to themselves [12], [13], [14].”
From If I were you: Perceptual illusion of body swapping (2008) · cites this paper as [12]
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References 12 · Cited by 235
- Authors
- Baier, B., & Karnath, H.-O.
- Affiliations
- Johannes Gutenberg University Mainz (DE)
- Venue
- Stroke
- Published
- 2008-02
- Volume
- 39
- Issue
- 2
- Pages
- 486-488
- ISSN
- 0039-2499 (ISSN-L)
- 1524-4628
- OpenAlex
- W2131425082
- Cited by
- 235
- References
- 12
- Citations by year
- 2026: 6 · 2025: 9 · 2024: 8 · 2023: 20 · 2022: 11 · 2021: 13 · 2020: 12 · 2019: 10 · 2018: 14 · 2017: 10 · 2016: 13 · 2015: 6 · 2014: 20 · 2013: 18 · 2012: 13
- FWCI
- 5.66
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Stroke (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Spatial Neglect and Hemispheric Dysfunction
- Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
- Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
- Keywords
- hemiparesis, posterior insula, somatoparaphrenia, asomatognosia, personification, right hemisphere damage, body image
- MeSH terms
- Acute Disease, Aged, Aged, 80 and over, Agnosia, Body Image, Cerebral Cortex, Female, Hallucinations, Hemiplegia, Humans, Functional Laterality, Male, Middle Aged, Paresis, Perception, Stroke
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