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.