Table 1.

Microsaccade and perceptual parameters

	S1	S2	S3	S4	S5	S6	S7	S8	Average ± SEM
Number of microsaccades	1908	2690	1538	2050	1143	2289	2907	1619	2000 ± 200
Microsaccade rate (N/s)	0.8	1.3	0.6	0.8	0.48	0.9	1.1	0.6	0.8 ± 0.1
Microsaccade magnitude (deg)	0.39	0.44	0.5	0.23	0.6	0.47	1.0	0.6	0.5 ± 0.1
Microsaccade duration (ms)	4.9	8	9	4.3	12	8	10	6	8 ± 1
Microsaccade peak velocity (deg/s)	23	26	27	14	27	25	50	30	28 ± 4
Main experimental condition: perception of illusory rotation in the Rotating Snakes Illusion
Number of transitions to rotation (N)	72	39	224	3	48	28	257	288	120 ± 40
Duration of illusory rotation periods (subsequent to the first illusory period) (s)	1.2	2.0	1.3	0.8	3.4	0.8	0.8	1.7	1.5 ± 0.3
Duration of first illusory rotation period after stimulus onset (s)	3.5	8.2	2.5	4.5	5.3	4.1	2.0	2.7	4.1 ± 0.7
Time spent in rotation periods (%)	7	8	22	0	14	2	15	36	13 ± 4
Number of transitions to stationary (N)	69	38	214	3	45	25	253	268	110 ± 40
Duration of stationary periods (s)	17	25	4.8	410	23	49	4.5	3.1	70 ± 50
Time spent in stationary periods (%)	93	92	78	100	86	98	85	64	87 ± 4
Control condition: perception of physical rotation
Reaction times to transitions to rotating (ms)	440	600	390	450	500	500	430	440	470 ± 20
Reaction times to transitions to stationary (ms)	460	480	440	480	500	600	480	430	490 ± 20
Correctly identified transitions to rotating (%)	95	94	98	100	94	78	91	95	94 ± 2
Correctly identified transitions to stationary (%)	100	100	97	100	91	90	95	100	97 ± 1

S[digit], Subject number.