TABLE I.

Demographics of the participants with CIs. Electrode pairs used for testing are shown along with the proportion of the dynamic range in current units used for presenting the signal detection stimuli.

Participant	Age (years)	Hearing history	Etiology	Age at 1st activation (years)	Age at 2nd activation (years)	Internal device (L, R)	Base pair (L, R)	Middle pair (L, R)	Apical pair (L, R)	Base prop. DR (L, R)	Middle prop. DR (L, R)	Apex prop. DR (L, R)
CIDX	11.6	Pro.a HLb ID at birth	Connexin 26	1.43	2.59	CI24R(CS), CI24R(CS)	4, 4	12, 12	20, 18	0.87, 0.87	0.77, 0.89	0.88, 0.88
CIDQ	12.2	ID at birth	Connexin 26	.82	4.34	CI24RE, CI24R(CS)	4, 4	12, 12	20, 20	0.77, 0.60	0.76, 0.66	0.72, 0.66
CIDJ	13.1	ID at 12 months	Hereditary	1.62	5.04	CI24RE, CI24R(CS)	6, 6	12, 12	20, 18	0.75, 0.86	0.77, 0.84	0.73, 0.85
CIEV	13.2	Progressed from sev.c to pro. by 2–3 years	Hereditary	2.67	10.95	CI24RE, CI24R(CA)	4, 6	12, 14	20, 20	0.83, 1	0.80, 1	0.79, 0.94
CIAG	13.3	Progressed from mod.d–sev. (L) and sev.-pro. (R) to pro. by 15 months	Connexin 26	1.72	3.12	CI24R(CS), CI24R(CS)	4, 4	12, 12	20, 20	0.68, 0.76	0.74, 0.71	0.81, 0.63
CIAW	13.6	Pro. HL ID at 3 months	Congenital CMV	1.21	5.46	CI24RE, CI24R(CS)	4, 4	12, 8	20, 22	0.5, 0.82	0.66, 0.73	0.58, 0.81
CIBO	14.2	Progressed from mod. to pro. HL by 28 months	EVAS/ Pendred syndrome	2.83	3.90	CI24R(CS), CI24R(CS)	4, 4	12, 12	20, 18	0.93, 0.97	0.92, 1	0.93, 1
CIAP	14.7	Progressed from mild to sev.-pro. by 3 years	Unknown	3.47	5.10	CI24R(CA),CI24R(CA)	4, 4	12, 10	20, 16	1, 1	1, 0.95	1, 1
CIBK	15.2	ID at 17 months	Connexin 26	2.14	7.11	CI24RE, CI24R(CS)	4, 4	12, 12	20, 18	0.76, 0.82	0.71, 0.85	0.72, 0.84
CIEU	16.2	Progressed from sev. to pro. by age 4 (R) and 8 (L) years	Hereditary	4.28	10.45	CI24RE, CI24R(CS)	4, 4	12, 12	18, 18	0.75, 0.73	0.63, 0.78	0.65, 0.84
CIAQ	17.5	Pro. HL ID at 13 months	Connexin 26	4.00	8.21	CI24R, CI24R	4, 4	12, 13	20, 19	0.89, 0.9	0.88, 0.91	0.89, 0.89

^aProfound.

^bHearing loss.

^cSevere.

^dModerate.