Table 1.

Psychophysical thresholds for 500 Hz and estimates of ERB (in Hz) for the derived AF shapes for the subjects with normal hearing (NH) as well as the pre- and postimplant EAS subjects

NH subjects	500-Hz threshold dB SPL	ERB Hz	EAS subjects	Preimplant 500-Hz threshold dB SPL	Preimplant ERB Hz	Postimplant 500-Hz threshold dB SPL	Postimplant ERB Hz
NH1	4	80.4	EAS1	36	338.4	49	360.0
NH2	7	97.6	EAS2	26	193.4	27	202.7
NH3	4	69.0	EAS3	62	N/A	66	N/A
NH4	6	76.3	EAS4	31	115.2	55	N/A
NH5	3	120.8	EAS5	35	106.5	60	270.0
NH6	6	80.2
NH7	3	95.8
NH8	9	69.5
NH9	−3	68.3
NH10	10	111.0
NH11	2	66.6
NH12	20	127.0
NH13	6	43.6
NH14	5	55.4
NH15	4	46.2
Mean	5.73	80.52	mean	38.00	188.38	51.40	277.57
SD	4.99	25.4	SD	13.98	107.37	15.01	78.92