Increased variability in spiral drawing in patients with functional (psychogenic) tremor.

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@article{Hess2014IncreasedVI, title={Increased variability in spiral drawing in patients with functional (psychogenic) tremor.}, author={Christopher W. Hess and Annie W Hsu and Qiping P Yu and Robert E Ortega and Seth L. Pullman}, journal={Human movement science}, year={2014}, volume={38}, pages={15-22} }