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Proprioception as a sensory root for body and motor awareness
Gerardo Salvato1,2,3, Giulia Casile1, Silvia Amaryllis Claudia Squarza4
1Department of Brain and Behavioral Sciences, University of Pavia, Pavia 27100, Italy.
Brain Communications
|October 24, 2025
Summary
Proprioception, the sense of body position, is crucial for body awareness and sense of agency. Impaired proprioception after right-hemisphere stroke predicts disturbances in body ownership and awareness of paralysis.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurology
Background:
- Proprioception is vital for body stability and protection.
- Hypotheses suggest proprioception contributes to body and motor awareness.
- Empirical testing in large neuropsychological samples is lacking.
Purpose of the Study:
- To investigate the role of proprioception in body and motor awareness.
- To test the hypothesis that proprioceptive deficits contribute to disturbed body ownership and anosognosia for hemiplegia.
- To examine these relationships in patients with right-hemisphere stroke.
Main Methods:
- Observational, cross-sectional study.
- Assessed 46 consecutive patients with right-hemisphere stroke.
- Evaluated proprioceptive abilities, disturbed sensation of ownership (DSO), and anosognosia for hemiplegia (AHP).
Main Results:
- Reduced proprioceptive abilities were found to predict both DSO and AHP.
- Proprioceptive deficits were linked to lesions in the right parietal cortex and associated white matter tracts.
- Bilateral disconnections between temporal and parietal areas correlated with decreased proprioception.
Conclusions:
- Proprioception plays a significant role in bodily self-awareness.
- Impaired proprioception is associated with disturbances in body ownership and awareness of paralysis.
- Findings support the contribution of proprioception to body and motor awareness in stroke patients.
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