Table 3.

Statistical significance testing for different signal characteristics according to the primary classifications of cytoplasmic calcium response identified after the application of ATP. The three primary signal classes were compared using the non-parametric Kruskal–Wallis test with Dunn's multiple comparisons post-test. Results indicating a statistical difference in the sample medians are indicated with asterisks.

		p-value
primary class	comparison group	peak h	peak t	FWHM	plateau height	spiking rate
(1) slow or absent response	(2) rapid peak, then plateau	***<0.001	>0.05	***p < 0.001	***<0.001	>0.05
	(3) rapid peak, then spiking	***<0.001	***<0.001	***p < 0.001	>0.05	***<0.001
(2) rapid peak, then plateau	(3) rapid peak, then spiking	>0.05	***<0.001	>0.05	***<0.001	***<0.001