TABLE 1.

Miniature End Plate Potentials (MEPPs) and End- Plate Potentials (EPPs) recorded in the lumbricalis muscle from sham and sympathectomized mice The number of fibres and mice examined for each group are between parentheses.

MEPP	Control (Sham) (63 fibres; eightmice) Mean ± SEM	Sympathectomy (79 fibres; six mice) Mean ± SEM	P value
MEPP
Amplitude (mV)	1.353 ± 0.02	1.288 ± 0.01	0.0001
Frequency (Hz)	0.928 ± 0.09	0.684 ± 0.06	0.0013
Time to Peak (ms)	0.865 ±0.11	0.690 ± 0.08	0.0907
Half decay time (ms)	2.254 ± 0.07	2.140 ± 0.05	0.0067
Duration (ms)	6.539 ± 0.41	5.552 ± 0.20	0.0020
EPP
Amplitude (mV)	22.933 ± 1.67	16.788 ± 0.68	0.0004
Latency (ms)	1.759 ± 0.08	1.898 ± 0.06	0.2346
Time to peak (ms)	1.922 ± 0.10	2.120 ± 0.08	0.2517
Half-decay time (ms)	2.804 ± 0.14	2.922 ± 0.10	0.4376
Quantal contents	15.884 ± 1.12	12.935 ± 0.50	0.0093

The number of fibres and mice examined for each group are between parentheses.