Progress and Prospects in Parkinson's Research/Symptoms/Festination

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Festination
Forced hurrying of walking, talking or thought.

The following references are relevant:-

Devos et al (2007)  Improvement of gait by chronic, high doses of methylphenidate in patients with advanced Parkinson's disease 

Hausdorff (2009)  Gait dynamics in Parkinson’s disease: Common and distinct behavior among stride length, gait variability, and fractal-like scaling 

Hove et al (2012) Interactive Rhythmic Auditory Stimulation Reinstates Natural 1/f Timing in Gait of Parkinson's Patients