Table 1

Main sequence parameters recorded using infrared limbal reflection

Subject		Duration-amplitude relation			Peak velocity-amplitude relation
		Saccades			OKN quick phases			Saccades			OKN quick phases
		Right			Left			Right			Left			Right			Left			Right			Left
		S ms/°	I ms		S ms/°	I ms		S ms/°	I ms		S ms/°	I ms		S	I		S	I		S	I		S	I
1	1.54	30.79		1.55	31.35		1.68	30.82		1.97	30.82		4.57	87.10		4.47	87.10		4.57	72.44		5.62	57.54
2	3.10	22.33		2.18	25.79		2.87	28.31		2.34	27.65		2.19	144.54		3.24	112.20		3.47	81.28		4.68	72.44
3	1.81	23.43		2.04	26.04		1.62	26.47		1.89	28.21		3.98	97.72		3.72	93.33		4.17	89.13		4.90	70.79
4	2.31	28.76		2.02	30.41		2.36	30.81		3.02	29.36		3.72	87.10		3.47	97.72		5.01	60.26		5.33	58.88
5	1.97	27.25		1.77	24.06		2.54	24.10		2.73	20.79		3.63	89.13		3.47	114.82		3.63	87.10		2.88	120.23
6	1.94	25.95		1.51	28.52		1.62	29.90		1.65	27.09		3.89	97.72		4.27	93.33		6.17	60.26		4.90	79.43
7	1.73	27.18		2.04	24.30		1.64	26.21		1.49	28.86		3.02	125.89		3.47	109.65		5.01	72.44		5.37	67.61
8	2.22	21.97		2.13	20.82		1.88	23.47		2.21	20.97		2.51	141.25		2.88	141.25		3.02	114.82		3.34	120.23
9	3.03	20.15		1.94	29.67		3.18	21.72		2.23	27.75		2.82	109.65		3.39	102.33		3.24	87.10		4.17	77.62
10	2.62	25.34		2.43	22.56		2.71	22.19		1.96	22.61		2.69	117.49		3.72	97.72		2.95	102.33		3.89	97.72
Mean	2.23	25.32		1.96	26.35		2.21	26.40		2.15	26.41		3.30	109.76		3.61	104.95		4.12	82.72		4.51	82.25

The slope (S) and intercept (I) values for the duration-amplitude (D-A) relation were obtained from a linear regression of the main sequence for duration for amplitudes >4°. The slope and intercept values for the peak velocity-amplitude (PV-A) relation were obtained from a linear regression of the logged main sequence for peak velocity for amplitudes >4°, such that PV = I.S^logA (see Methods and Fig 1B, C).