Table 2 Mean (SD) MMN and LDN indices for the small and large deviants
| Â | Â | Group | |||
|---|---|---|---|---|---|
| Â | Deviant size | TD | DYS | ||
Age band | Â | Younger | Older | Younger | Older |
Deviant mismatch indices | Â | Â | Â | Â | Â |
 MMN mean amplitude | Large | -1.77 (10.01) | -3.39 (4.70) | -1.03 (5.36) | -3.33 (7.37) |
| Â | Small | 1.06 (5.32) | 1.76 (9.63) | 4.56 (7.08) | 3.61 (5.33) |
 ITC 0–300 ms, 4–7 Hz | Large | 0.11 (0.04) | 0.08 (0.02) | 0.09 (0.02) | 0.12 (0.04) |
| Â | Small | 0.09 (0.02) | 0.10 (0.02) | 0.12 (0.02) | 0.13 (0.02) |
 LDN mean amplitude | Large | 0.41 (11.14) | -2.61 (4.63) | -4.90 (6.12) | -0.92 (5.22) |
| Â | Small | -5.47 (5.18) | -0.98 (12.63) | 0.62 (7.31) | -3.88 (6.64) |
 ERSP 300–600 ms, 4–7 Hz | Large | 0.04 (0.59) | -0.33 (0.63) | -0.16 (0.39) | -0.11 (0.48) |
| Â | Small | -0.02 (0.56) | -0.46 (0.54) | -0.29 (0.52) | 0.25 (0.36) |