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Open access Sep 2026

Quantitative Assessment of Facial Expression Asymmetry in Parkinson's Disease.

Objective Hypomimia, or reduced facial expressiveness, is a cardinal motor feature of Parkinson's disease (PD). Although limb motor symptoms in PD are characteristically asymmetric, whether facial hypomimia exhibits comparable asymmetry remains poorly understood. We investigated facial expression asymmetry in PD using...

Atefeh Irani, Kye Won Park, Farnaz Sedaghati et al. · 0 citations
Open access Sep 2026

A consistent vigor network in Parkinson's disease: a potential target for brain stimulation effects

In motor tasks with repetitive trials, motor vigor varies substantially from trial to trial in people with Parkinson's disease (PD). A key question is whether neural variability reflects behavioral variability or whether additional variability emerges as the neural signal is translated into movement. We aimed to id...

Zahra Kavian, Sepideh Hajipour Sardouie, Emad Arasteh et al. · 0 citations

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