Table 2.
Mean percentage changes with respect to non-SAS values, and percentage of subjects showing at least 5% and 10% differences, for all the features showing statistically significant differences (p < 0.01) between non-SAS and SAS trials, at 15 cm and 30 cm.
| Parameter | p-value Startle factor ANOVA | Differences: Higher ( >) or Lower ( >) in SAS trials | Mean (SD) Percentage Change | % Subjects showing differences > 5% | % Subjects showing differences > 10% | |||
|---|---|---|---|---|---|---|---|---|
| 15 cm | 30 cm | 15 cm | 30 cm | 15 cm | 30 cm | |||
| Switch button | ||||||||
| Response time (ms) | < 0.001 | < | 15 (7) | 15 (8) | 97 | 78 | 77 | 72 |
| EMG—onset latencies (ms) | ||||||||
| SCM | < 0.001 | < | 52 (14) | 52 (16) | 100 | 100 | 100 | 100 |
| DEL | < 0.001 | < | 37 (19) | 35 (20) | 97 | 91 | 90 | 88 |
| TRA | < 0.001 | < | 38 (20) | 31 (48) | 93 | 88 | 93 | 88 |
| PECT | < 0.001 | < | 39 (16) | 40 (19) | 97 | 94 | 97 | 94 |
| ABD | < 0.001 | < | 36 (31) | 42 (26) | 93 | 90 | 89 | 90 |
| PC | < 0.001 | < | 44 (21) | 36 (26) | 93 | 94 | 93 | 91 |
| PT | < 0.001 | < | 39 (20) | 30 (24) | 97 | 88 | 93 | 81 |
| PL | < 0.001 | < | 30 (16) | 25 (15) | 90 | 91 | 90 | 84 |
| EMG—CoG (ms) | ||||||||
| SCM | < 0.001 | < | 15 (10) | 12 (13) | 90 | 78 | 67 | 59 |
| DEL | < 0.001 | < | 16 (7) | 15 (9) | 93 | 84 | 87 | 75 |
| TRA | < 0.001 | < | 14 (9) | 13 (8) | 87 | 91 | 63 | 75 |
| PECT | < 0.001 | < | 18 (10) | 18 (12) | 87 | 91 | 80 | 81 |
| ABD | < 0.001 | < | 17 (12) | 14 (13) | 79 | 84 | 79 | 74 |
| PC | < 0.001 | < | 14 (10) | 14 (6) | 83 | 97 | 77 | 72 |
| PT | < 0.001 | < | 13 (6) | 14 (10) | 87 | 88 | 73 | 72 |
| PL | < 0.001 | < | 14 (8) | 12 (10) | 97 | 88 | 70 | 56 |
| EMG—areas (μV s) | ||||||||
| SCM | < 0.001 | > | 20 (23) | 18 (24) | 67 | 75 | 63 | 59 |
| PECT | 0.005 | > | 15 (21) | 8 (22) | 57 | 56 | 40 | 41 |
| PC | 0.001 | > | 20 (26) | 12 (15) | 70 | 63 | 57 | 47 |
| EMG—peak amplitudes (μV) | ||||||||
| SCM | < 0.001 | > | 34 (32) | 26 (42) | 90 | 69 | 83 | 63 |
| DEL | < 0.001 | > | 19 (21) | 7 (15) | 77 | 44 | 63 | 28 |
| TRA | < 0.001 | > | 25 (27) | 15 (15) | 83 | 78 | 73 | 56 |
| PECT | < 0.001 | > | 44 (42) | 27 (45) | 90 | 75 | 90 | 59 |
| PT | < 0.001 | > | 18 (23) | 14 (22) | 77 | 66 | 63 | 59 |
| Accelerometry | ||||||||
| PeakAccX (m/s2) | < 0.001 | > | 58 (74) | 37 (48) | 86 | 74 | 83 | 74 |
| PeakAccY (m/s2) | < 0.001 | > | 95 (79) | 83 (65) | 93 | 97 | 93 | 97 |
| PeakAccZ (m/s2) | < 0.001 | > | 89 (64) | 73 (63) | 97 | 94 | 97 | 81 |
| fQ3 (Hz) | 0.01 | > | 31 (63) | 15 (26) | 59 | 48 | 45 | 39 |
| fmax (Hz) | < 0.001 | > | 47 (40) | 41 (71) | 90 | 71 | 90 | 65 |
| RATIOHL (%) | < 0.001 | > | 55 (67) | 46 (72) | 83 | 71 | 79 | 68 |