TABLE 5.

Effects of bilateral injections of DAMGO on the slow rhythm.

	Pause duration (min)	Control period (s)	Washout period (s)	p-value
Rostral	27.0 ± 15. 6	34.4 ± 25.0	41.1 ± 24.4	= 0.025
Middle	47.2 ± 12.4	43.3 ± 31.3	73.2 ± 57.6	<0.001
Caudal	29.7 ± 9.7	23.1 ± 17.8	32.7 ± 28.3	<0.001

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