The Characteristics of Action Potentials in Primo Vessels and the Effects of Acetylcholine Injection to the Action Potentials

Table 1

The amplitude, FWHM and period for the Primo-vessel action potentials. The amplitude is the difference between the maximum and rest potentials. The FWHM is the time difference between two points that is equal to half of the amplitude. The period is the time difference between one peak and the next peak. The amplitude was slightly but not significantly increased after acetylcholine injection. The FWHM was not changed by acetylcholine. The period was decreased after injection.

	Amplitude (mV)	FWHM (ms)	Period (s)
Before injection	0.53 ± 0.10	31 ± 7	2.234 ± 0.442
After injection	0.59 ± 0.10	32 ± 8	1.364 ± 0.474