Table 3.
The post hoc tests investigating age group × stimulus type × condition interaction in sensory gating. The mean (M) amplitude values (μV), standard deviations (SD) and independent samples t-tests comparing the mean amplitudes between the younger and the older group.
| Stimulus type | Group | M (SD) | t-value | p-value | df | Cohen’s D | 95% CI |
|---|---|---|---|---|---|---|---|
| st 80 dB | Younger | 0.1 (0.6) | 3.2 | 0.004 | 70 | 0.8 | 0.19, 0.81 |
| Older | −0.4 (0.7) | ||||||
| st 60 dB | Younger | 0.1 (0.6) | 2.5 | 0.018 | 70 | 0.6 | 0.09, 0.74 |
| Older | −0.3 (0.8) | ||||||
| dev 80 dB | Younger | −1.4 (1.3) | 3.4 | 0.004 | 70 | 0.8 | 0.40, 1.52 |
| Older | −2.4 (1.1) | ||||||
| dev 60 dB | Younger | 0.1 (1.0) | 1.2 | 0.221 | 70 | 0.4 | −0.15, 0.63 |
| Older | −0.2 (0.7) |
Notes. Df, degrees of freedom; 95% CI, 95% confidence interval; St 80 dB, 80 dB standard sound; St 60 dB, 60 dB standard sound; dev 80 dB, 80 dB deviant sound; dev 60 dB, 60 dB deviant sound.