Walsh, E G Beats produced between a rhythmic applied force and the resting tremor of Parkinsonism. [electronic resource] - Journal of neurology, neurosurgery, and psychiatry Jan 1979 - 89-94 p. digital Publication Type: Journal Article ISSN: 0022-3050 Standard No.: 10.1136/jnnp.42.1.89 doi Subjects--Topical Terms: ElectromyographyFoot--innervationForearm--innervationHand--innervationHumansMiddle AgedMovementMuscle ContractionMuscles--physiopathologyParkinson Disease--physiopathologyTremor--physiopathology