Objective Assessment of Facial Expressions in Parkinson's Disease During Deep Brain Stimulation <scp>ON</scp> and <scp>OFF</scp> States: A Pilot Study
STN-DBS enhances the amplitude of some facial movements but does not fully restore temporal dynamics of facial expression. Persistent delays in smile execution suggest that aspects of facial motor control may remain impaired despite effective stimulation. Objective facial landmark-based motion analysis provides a sensitive tool for detecting subtle alterations in facial motor dynamics and may support future studies investigating complementary strategies to optimize motor expressivity in PD.
Authors
- Sefa Öztürk (ORCID: https://orcid.org/0000-0001-5583-0384)
- Ahmet Muhammet Kocabıyık
- Pulat Akın Sabancı
Institutions
- Hakkari University (TR)
- Taksim German Hospital (TR)
- TUBITAK BILGEM (TR)
- Kocaeli Üniversitesi (TR)
- Istanbul University (TR)
Publication Details
- Journal
- European Journal of Neurology
- Published
- 2026-01-01
- DOI
- https://doi.org/10.1111/ene.70497
- Primary Topic
- Neurological disorders and treatments
- Type
- article
- Field-Weighted Citation Impact
- 0.00