TABLE 1.

MPI model input parameters obtained by minimizing the percent rms differences between model matrices and observed matrices (baseline, W1, W2, W3, and final)

Subject	N3					N4					N7
JND (mm)	jF1 = 0.1 jF2 = 0.33					jF1 = 0.06 jF2 = 0.19					jF1 = 0.1 jF2 = 0.34
Condition	Bas	W1	W2	W3	Fin	Bas	W1	W2	W3	Fin	Bas	W1	W2	W3	Fin
rms	11.6	13.2	12.5	13.4	9.5	8.3	11.3	11.1	11.0	8.3	11.1	13.4	12.6	11.1	9.6
R2	0.79	0.58	0.64	0.63	0.83	0.91	0.71	0.74	0.75	0.91	0.79	0.44	0.67	0.75	0.86
RCU1	0.06	0.17	0.10	0.13	0.14	0.06	0.26	0.14	0.12	0	0.03	0.50	0.20	0.12	0.03
RCU2	0.06	1.38	1.32	0.90	0.18	0.07	1.48	1.16	1.22	0.02	0.17	1.34	0.93	0.54	0.10
b1	0.07	−0.04	−0.06	−0.04	0.01	−0.03	−0.06	−0.10	−0.14	−0.06	−0.05	−0.09	−0.15	−0.09	−0.02
b2	0.21	0.58	0.58	0.63	0.15	−0.07	−0.44	−0.24	−0.39	−0.08	−0.03	−0.62	−0.48	−0.09	−0.10
Model %	72.9	55.4	56.5	60.0	69.6	77.9	53.4	59.5	58.4	77.7	72.5	47.2	59.1	65.5	74.0
Actual %	70.7	50.9	53.8	56.0	67.8	86.6	60.4	64.9	64.7	86.6	68.9	44.3	61.9	65.2	75.6

Just noticeable difference, response center uncertainty and bias parameters are jF1, RCU1, and b1 for F1 and jF2, RCU2, and b2 for F2, expressed in millimeters along the implanted electrode array. The last two rows show predicted and observed vowel identification percent correct scores