Table 2

Main sequence parameters recorded using electro-oculography

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	1.50	28.00		1.71	27.19		1.68	30.72		1.78	29.42		4.47	89.13		4.27	95.50		4.47	64.57		5.62	63.10
2	2.57	19.43		2.46	23.08		3.22	19.63		3.43	19.95		2.04	138.04		3.02	114.82		3.16	79.86		4.07	75.86
3	2.27	16.44		2.33	16.24		2.97	17.83		2.83	18.34		3.89	104.71		3.72	97.72		4.27	91.20		4.47	79.43
4	2.18	27.12		2.39	27.80		2.69	28.35		3.25	26.07		3.63	85.11		3.63	91.20		4.47	64.57		4.90	56.23
5	1.71	27.19		1.63	26.85		2.39	26.32		2.48	28.87		4.27	79.43		3.16	102.33		3.72	74.13		3.16	102.33
6	1.92	25.34		1.58	28.60		1.63	26.85		2.13	23.43		3.72	91.20		3.98	97.72		5.62	53.70		5.37	70.79
7	1.96	26.97		2.05	26.47		1.97	25.80		2.42	27.20		3.09	128.82		3.24	117.49		4.57	79.43		5.01	68.79
8	1.85	21.67		1.78	18.38		2.17	19.00		2.10	15.71		2.57	141.25		2.69	131.83		3.02	117.49		3.02	120.50
9	2.86	18.50		2.35	26.01		3.34	21.15		3.26	18.61		2.51	117.49		3.09	107.15		2.82	91.20		3.24	79.43
10	2.30	19.11		2.44	18.59		2.43	19.51		2.53	19.73		2.24	134.90		2.88	114.82		2.57	97.72		3.72	91.20
Mean	2.11	22.98		2.07	23.92		2.45	23.52		2.62	22.73		3.24	111.01		3.37	107.06		3.87	81.39		4.26	80.77

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).

Comparison of the main sequence of reflexive saccades and the quick phases of optokinetic nystagmus

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