Table 1.

Summary of electrophysiological findings

Measurement	Striatal neurons	Neuromuscular junction
Spontaneous release (mEPPs)	Unchanged	>10-fold increase in mEPP frequency, independent of calcium
Evoked synaptic responses	Slow component of IPSC slowed	Slow component of synaptic response slowed
	Amplitude and charge transfer not altered	Amplitude and quantal content decreased
Paired-pulse facilitation	Not measured	Decrease in paired-pulse ratio
High-frequency stimulus trains	Not measured	Desynchronization of vesicle release
		Facilitation of synaptic response (10 or 20 Hz)

mEPP, Miniature endplate potential.