Table 1.

Pre-infusion of scala media with the P2X antagonist PPADS (1,000 μM, 50 nL) prior to ATP (100 μM, 10 nL) caused a significant reduction in the magnitude of change in EP and CoPR

	No PPADS		PPADS
	Before ATP	During ATP	Before ATP	During ATP
EP	118.8 ± 4.2	99.1 ± 4.2*	110.7 ± 3.9	106.5 ± 4.5
CoPR	6.8 ± 0.2	6.1 ± 0.1*	7.2 ± 0.3	6.8 ± 0.3

Data presented as mean ± SEM

*p < 0.01 (when compared between before and during ATP)