42. Functional Tremor: When neurophysiology makes the difference

Functional tremor (FT) still remains a challenge for clinicians; here, we propose a simple and fast test battery for an early diagnosis of FT.We enrolled ten patients with probable FT and compared them with patients with essential tremor (ET) or tremor-dominant Parkinson's Disease (PD). Surface polymyography was bilaterally performed with arms relaxed, with arms outstretched at shoulder level without or with a 500-g mass attached to the wrist ("mass loading"), during voluntary contralateral motor activation and while performing ballistic movements.

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