This study examined how different support-surface conditions (e.g., stable vs. unstable surfaces) modulate the subjective postural vertical (SPV) in Parkinson's disease (PD) patients with postural abnormalities such as camptocormia or Pisa syndrome, compared to controls.
Support-surface conditions differentially affected SPV perception in PD patients with postural abnormalities, suggesting that somatosensory input from the support surface plays a distinct role in postural vertical perception in this population.
The paper metadata does not provide full text details on sample size, blinding, or control group composition, limiting assessment of generalizability and internal validity.
Clinicians managing PD patients with postural abnormalities should consider that surface conditions may systematically bias postural vertical perception, which could inform rehabilitation strategies targeting somatosensory feedback. Assessment and therapy on varied surfaces may reveal or address sensory reweighting deficits in this group.
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