Table 1.

Correspondences between clinical observation and EMG in basal ganglia disorders

Clinical observations	EMG
Affected parts of the body	Simultaneous recording from many muscles
Pattern of movement	Pattern of EMG
Briskness	Duration of discharges
Irregularity	Irregularity of discharges
Amount of movement	Amount of action potentials
Underlying muscle tone	Tonic discharges at rest
	Response to passive stretch
Provoking or inhibiting factors	Recording under different physical or mental conditions

(From Yanagisawa and Hashimoto, 1992¹¹⁾)