Table 2.
Mean (n = 5) and standard deviation for gain measured at (i) 30 ms and (ii) maximum amplitude, and rise time (measured at 90% of maximum amplitude) for the cortical stimuli.
| Nominal gain (dB) Input (dB SPL) |
Short stimulus (60 ms) | Long stimulus (757 ms) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 | 40 | 20 | 40 | ||||||||
| 30 | 50 | 70 | 30 | 50 | 30 | 50 | 70 | 30 | 50 | ||
| Analog | |||||||||||
| 30 ms (dB) | 15.9 ± 1.6 | 17.0 ± 0.9 | 17.3 ± 1.0 | 34.9 ± 2.2 | 36.2 ± 1.8 | 16.0 ± 0.7 | 16.7 ± 0.6 | 17.4 ± 0.7 | 35.5 ± 0.5 | 35.5 ± 1.4 | |
| Max (dB) | 15.7 ± 1.1 | 16.9 ± 1.0 | 17.4 ± 0.1 | 34.5 ± 1.9 | 36.2 ± 2.0 | 15.2 ± 1.3 | 16.6 ± 0.7 | 17.3 ± 0.8 | 34.7 ± 1.9 | 35.3 ± 1.5 | |
| Rise time (ms) | 22.2 ± 1.9 | 21.9 ± 1.4 | 22.4 ± 1.7 | 22.5 ± 1.4 | 22.1 ± 1.9 | 12.5 ± 3.2 | 11.6 ± 3.2 | 12.8 ± 2.8 | 11.9 ± 1.9 | 12.3 ± 2.6 | |
| DigitalA | |||||||||||
| 30 ms (dB) | 10.9 ± 4.5 | 15.8 ± 3.1 | 15.6 ± 3.1 | 30.1 ± 6.1 | 35.5 ± 3.5 | 13.1 ± 3.3 | 17.0 ± 2.0 | 16.8 ± 2.4 | 33.8 ± 3.2 | 36.1 ± 1.5 | |
| Max (dB) | 15.4 ± 3.2 | 17.1 ± 2.7 | 16.7 ± 2.6 | 34.5 ± 4.3 | 36.3 ± 2.6 | 15.7 ± 2.4 | 17.8 ± 1.6 | 17.1 ± 2.6 | 36.9 ± 1.9 | 36.4 ± 1.3 | |
| Rise time (ms) | 38.6 ± 3.7 | 27.9 ± 3.3 | 30.3 ± 3.1 | 33.8 ± 6.6 | 22.6 ± 2.3 | 39.4 ± 7.2 | 25.7 ± 7.4 | 23.4 ± 6.6 | 43.3 ± 14.7 | 18.8 ± 5.5 | |
| DigitalB | |||||||||||
| 30 ms (dB) | −2.7 ± 2.1 | 0.9 ± 2.9 | 0.2 ± 2.3 | 21.5 ± 3.4 | 23.1 ± 2.3 | −2.0 ± 3.2 | 1.4 ± 5.3 | 4.2 ± 3.9 | 23.1 ± 2.2 | 26.1 ± 2.6 | |
| Max (dB) | 4.5 ± 3.8 | 7.6 ± 2.3 | 7.5 ± 1.1 | 26.2 ± 2.2 | 27.8 ± 1.6 | 13.8 ± 4.1 | 15.8 ± 3.1 | 17.4 ± 2.2 | 35.4 ± 1.8 | 37.0 ± 1.8 | |
| Rise time (ms) | 45.5 ± 2.7 | 44.2 ± 1.8 | 45.2 ± 1.5 | 41.6 ± 2.4 | 40.9 ± 2.5 | 141.5 ± 8.9 | 150.8 ± 4.5 | 149.6 ± 8.4 | 154.5 ± 3.3 | 145.6 ± 3.2 | |