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- W1533496890 endingPage "342" @default.
- W1533496890 startingPage "329" @default.
- W1533496890 abstract "This chapter reviews the pathophysiological mechanisms and the clinical features of motor manifestations of Parkinson's disease (PD). The most typical and easily recognized symptom of PD is unilateral, 4–6 Hz, rest tremor. This is differentiated from the typical 5–8 Hz postural tremor of essential tremor (ET), enhanced physiologic tremor (8–12 Hz), and cerebellar outflow tremor (2–5 Hz). The rest tremor characteristically disappears with action (a feature differentiating it from ET) and during sleep. Stimulation of the subthalamic nucleus (STN), which is typically hyperactive in PD, can also normalize the amplitude and frequency of PD tremor towards physiologic ranges. In PD, the rigidity is usually accompanied by a “cogwheel” phenomenon, probably a manifestation of underlying tremor. Rigidity often increases with reinforcing maneuvers such as voluntary movements of the contralateral limb. This examination technique can greatly assist in the diagnosis of early PD, as the rigidity is ipsilateral to the rest tremor, if present." @default.
- W1533496890 created "2016-06-24" @default.
- W1533496890 creator A5015721522 @default.
- W1533496890 creator A5068655451 @default.
- W1533496890 date "2007-01-01" @default.
- W1533496890 modified "2023-10-10" @default.
- W1533496890 title "Motor symptoms in Parkinson's disease" @default.
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