Table 3.
Peak mean latency and amplitude of the N100 and P200 (standard deviations in parenthesis).
| Subjects | Neutral | Angry | Happy |
|---|---|---|---|
| N100 peak latency (ms) | |||
| NH | 137 (11.5) | 138 (13.5) | 140 (10.1) |
| ACE | 145 (22.0) | 156 (23.4) | 151 (22.0) |
| MP3000 | 154 (22.0) | 155 (22.2) | 154 (21.8) |
| N100 peak amplitude (μV) | |||
| NH | − 3.90 (1.8) | − 3.90 (1.5) | − 4.00 (1.9) |
| ACE | − 2.31 (1.3) | − 2.82 (1.3) | − 2.60 (1.2) |
| MP3000 | − 2.81 (1.8) | − 2.50 (1.3) | − 2.55 (1.4) |
| P200 peak latency (ms) | |||
| NH | 240 (16.6) | 240 (20.2) | 234 (10.0) |
| ACE | 259 (25.0) | 270 (26.1) | 270 (24.1) |
| MP3000 | 262 (25.0) | 271 (25.6) | 271 (25.2) |
| P200 peak amplitude (μV) | |||
| NH | 5.90 (1.5)⁎ | 6.00 (1.5)⁎ | 6.20 (1.8)⁎ |
| ACE | 2.23 (1.2) | 2.38 (0.9) | 2.34 (0.9) |
| MP3000 | 2.21 (1.1) | 2.31 (0.8) | 2.81 (0.9)⁎⁎ |
⁎
Indicate the significant differences in mean P200 amplitude for NH subjects compared with ACE and MP3000 users.
⁎⁎
Indicates significant P200 amplitude difference between ACE and MP3000 users (p < .05).