Table 3.
Descriptive statistics for ERP and Time-Frequency variables
| Group | Type | Variable | StimulusF1 | StimulusF2 | StimulusW1 | StimulusW2 |
|---|---|---|---|---|---|---|
| TD | Amplitude | P50 | 1.80 (1.70) | 1.36 (0.97) | 1.85 (1.16) | 1.39 (0.76) |
| N1 | −1.04 (1.52) | −0.55 (0.79) | 1.71 (0.78) | 0.97 (0.36) | ||
| P2 | 1.85 (1.19) | 0.94 (0.82) | 1.86 (0.69) | 1.26 (0.39) | ||
| N2 | −1.40 (0.64) | −1.32 (0.67) | 1.47 (0.45) | 1.14 (0.39) | ||
| Latency | P50 | 68.9 (13.3) | 89.4 (21.5) | 68.0 (13.0) | 87.4 (25.1) | |
| N1 | 112 (19.1) | 139 (32.6) | 114 (22.3) | 138 (35.1) | ||
| P2 | 176 (34.5) | 185 (31.9) | 169 (20.3) | 183 (25.4) | ||
| N2 | 269 (27.9) | 288 (33.2) | 267 (26.4) | 284 (31.7) | ||
| PMS | Amplitude | P50 | 1.60 (1.02) | 1.21 (0.76) | 1.56 (0.71) | 1.25 (0.48) |
| N1 | −1.01 (0.98) | −0.54 (0.56) | 1.38 (0.82) | 0.83 (0.39) | ||
| P2 | 1.06 (0.95) | 0.65 (0.60) | 1.27 (0.68) | 0.84 (0.41) | ||
| N2 | −0.97 (0.86) | −1.03 (0.67) | 1.03 (0.66) | 0.96 (0.50) | ||
| Latency | P50 | 87.9 (29.2) | 98.4 (31.5) | 87.8 (21.9) | 100 (30.3) | |
| N1 | 156 (47.8) | 166 (39.9) | 155 (46.1) | 165 (36.6) | ||
| P2 | 216 (54.1) | 222 (45.4) | 212 (50.3) | 221 (45.0) | ||
| N2 | 297 (66.4) | 292 (41.2) | 292 (63.4) | 294 (42.2) | ||
| TD | Power | Delta | 53.6 (2.81) | 53.4 (2.89) | 45.8 (3.02) | 45.5 (3.01) |
| Theta | 52.3 (2.76) | 51.9 (3.05) | 45.4 (2.85) | 45.1 (2.85) | ||
| Alpha | 48.5 (2.39) | 48.3 (2.65) | 43.5 (2.43) | 43.1 (2.50) | ||
| Beta | 40.3 (2.07) | 40.3 (2.07) | 37.8 (1.68) | 37.6 (1.70) | ||
| Gamma | 25.4 (3.23) | 25.6 (2.94) | 28.1 (1.88) | 28.3 (1.67) | ||
| ITC | Beta-Gamma | 0.08 (0.07) | 0.06 (0.06) | 0.02 (0.03) | 0.01 (0.02) | |
| Alpha-Beta | 0.17 (0.11) | 0.07 (0.07) | 0.03 (0.03) | 0.01 (0.02) | ||
| Delta-Theta | 0.17 (0.12) | 0.11 (0.10) | 0.03 (0.05) | 0.03 (0.03) | ||
| PMS | Power | Delta | 51.6 (4.37) | 51.5 (4.24) | 44.7 (2.91) | 44.9 (3.08) |
| Theta | 50.7 (4.68) | 50.4 (4.70) | 44.1 (2.90) | 44.1 (2.85) | ||
| Alpha | 46.9 (4.61) | 46.7 (4.66) | 42.4 (2.78) | 42.3 (2.80) | ||
| Beta | 39.6 (4.78) | 39.6 (5.05) | 37.3 (2.20) | 37.3 (2.49) | ||
| Gamma | 24.2 (4.92) | 24.3 (5.20) | 28.5 (2.86) | 28.6 (3.28) | ||
| ITC | Beta-Gamma | 0.03 (0.05) | 0.03 (0.03) | 0.01 (0.03) | 0.01 (0.02) | |
| Alpha-Beta | 0.09 (0.08) | 0.06 (0.04) | 0.01 (0.02) | 0.01 (0.02) | ||
| Delta-Theta | 0.13 (0.11) | 0.10 (0.09) | 0.03 (0.04) | 0.01 (0.03) |
Note: Table values are means (standard deviations). Amplitudes are measured in μV, latencies in ms, and power in dB. F, frontal; W, whole-head; TD, typically developing; PMS, Phelan-McDermid Syndrome