Table 1.

Distributions of best frequencies of neurons belonging to the BE, BS, and hybrid MTF types obtained with the raised-sine-8 envelope and a criterion of 1.2

BF (kHz)	BE	BS	Hybrid	Sum
0.5	0	1	0	1
1.0	0	1	2	3
2.0	1	11	3	15
4.0	11	15	19	45
8.0	10	7	11	28
16.0	2	6	2	10
sum	24	41	37	102

Best frequencies (BFs) were grouped into 1-octave-wide bins. The chi-square test indicated that the BF distributions were not significantly different among the three modulation transfer function (MTF) types; P = 0.094, chi-square = 4.78, degree of freedom = 10. BE, band-enhanced; BS, band-suppressed.