Table 1.

Directions and relative orientations of amplitude modulation rate and frequency gradients in selected auditory fields

DOI: http://dx.doi.org/10.7554/eLife.03256.007

Animal	Hemis-phere	Field	Rel. angle (α) (degrees)	Frequency (degrees)	R2	p-value	Rate (degrees)	R2	p-value	N (vertices)
M1	L	A1	137	162	0.796	<1E-16	25	0.636	<1E-16	84
	R		73	155	0.546	<1E-16	82	0.696	<1E-16	101
M2	L		120	175	0.927	<1E-16	56	0.884	<1E-16	154
	R		133	160	0.803	<1E-16	66	0.750	<1E-16	103
M3	L		121	164	0.824	<1E-16	43	0.699	<1E-16	156
	R		128	175	0.722	<1E-16	47	0.675	<1E-16	87
Average			118.7	165.2	0.77		53.2	0.72		114.2
Std dev			23.3	8.2	0.13		19.7	0.09		32.5
M1	L	R	81	38	0.106	1.40E-02	120	0.782	<1E-16	88
	R		140	23	0.391	2.89E-11	117	0.600	<1E-16	107
M2	L		51	29	0.697	<1E-16	80	0.420	2.00E-09	102
	R		103	44	0.441	2.50E-10	147	0.660	<1E-16	93
M3	L		180	81	0.476	1.40E-10	100	0.255	4.20E-06	87
	R		148	9	0.611	4.20E-15	157	0.691	<1E-16	73
Average			117.2	37.3	0.45		120.2	0.57		91.7
Std dev			47.6	24.6	0.20		28.7	0.20		12.1
M1	L	CL	161	13	0.577	2.80E-04	148	0.587	1.70E-06	33
	R		113	109	0.516	3.30E-07	138	0.264	1.90E-03	44
M2	L		163	42	0.563	3.30E-07	155	0.582	2.00E-12	40
	R		102	14	0.552	5.70E-10	116	0.559	<1E-16	58
M3	L		168	27	0.795	3.30E-16	165	0.751	2.60E-14	48
	R		158	2	0.706	4.20E-11	156	0.768	4.20E-13	42
Average			144.2	34.5	0.62		146.3	0.59		44.2
Std dev			28.8	39.0	0.11		17.4	0.18		8.4

Main gradient directions (relative to anterior-posterior axis) and the resulting relative angle (α) between the orientations of the amplitude modulation rate (Rate) and spectral frequency (Frequency) gradients in auditory fields A1, R and CL are listed for two hemispheres (L, R) in three animals (M1-3). Additionally, R² values, p-values and number of data points (n) from the respective 2D regression analysis are included.