Site of cochlear stimulation and its effect on electrically evoked compound action potentials using the MED-EL standard electrode array

Table 3 Observed regional effects on the respective ECAP features.

	ANOVA	t-test basal-apical	t-test middle-apical	t-test middle-basal	Mauchly's Test	Greenhouse Geisser
ECAP amplitude	P < 0.001 F = 10.994	p = 0.0007	p = 0.0035	p = 0.0527	No sphericity	ε = 0.748
ECAP threshold	P = 0.003 F = 5.376	p = 0.0026	p = 0.0511	p = 0.2314	No sphericity	ε = 0.999
ECAP slope (ampl. growth function)	P < 0.001 F = 12.038	p = 0.0014	p = 0.0002	p = 0.7055	No sphericity	ε = 0.690
ECAP amplitude (recovery function)	P = 0.045 F = 3.460	p = 0.0086	p = 0.2770	p = 0.1775	sphericity	-
ECAP Recovery Interpulse nterval (rIPI)	P = 0.029 F = 4.015	p = 0.0590	p = 0.0262	p = 0.7198	sphericity	-

The results of the statistical analysis are shown. Significant results are printed in boldface. The Bonferroni corrected significance level was α = 0.0167.

ISSN: 1475-925X