TABLE 3.

Effects of bilateral injection of Xylocaine on the slow rhythm.

	Pause duration (min)	Control period (s)	Washout period (s)	p-value
Rostral	27.0 ± 9.8	46.6 ± 39.2	63.5 ± 53.9	=0.004
Middle	18.6 ± 8.4	52.9 ± 43.8	68.9 ± 66.8	= 0.077
Caudal	11.1 ± 9.7	47.6 ± 30.8	74.6 ± 35.4	<0.001

Mean ± SD represent the pause duration (min) and the slow rhythm period (s). For the rostral and middle site, the control and the washout conditions were compared using a Wilcoxon signed rank test. A paired t-test was used for the caudal site.