Table 2: Mean ( ) 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)
20402040
30507030503050703050

Analog
 30 ms (dB)15.9 ± 1.617.0 ± 0.917.3 ± 1.034.9 ± 2.236.2 ± 1.816.0 ± 0.716.7 ± 0.617.4 ± 0.735.5 ± 0.535.5 ± 1.4
 Max (dB)15.7 ± 1.116.9 ± 1.017.4 ± 0.134.5 ± 1.936.2 ± 2.015.2 ± 1.316.6 ± 0.717.3 ± 0.834.7 ± 1.935.3 ± 1.5
 Rise time (ms)22.2 ± 1.921.9 ± 1.422.4 ± 1.722.5 ± 1.422.1 ± 1.912.5 ± 3.211.6 ± 3.212.8 ± 2.811.9 ± 1.912.3 ± 2.6
DigitalA
 30 ms (dB)10.9 ± 4.515.8 ± 3.115.6 ± 3.130.1 ± 6.135.5 ± 3.513.1 ± 3.317.0 ± 2.016.8 ± 2.433.8 ± 3.236.1 ± 1.5
 Max (dB)15.4 ± 3.217.1 ± 2.716.7 ± 2.634.5 ± 4.336.3 ± 2.615.7 ± 2.417.8 ± 1.617.1 ± 2.636.9 ± 1.936.4 ± 1.3
 Rise time (ms)38.6 ± 3.727.9 ± 3.330.3 ± 3.133.8 ± 6.622.6 ± 2.339.4 ± 7.225.7 ± 7.423.4 ± 6.643.3 ± 14.718.8 ± 5.5
DigitalB
 30 ms (dB)−2.7 ± 2.10.9 ± 2.90.2 ± 2.321.5 ± 3.423.1 ± 2.3−2.0 ± 3.21.4 ± 5.34.2 ± 3.923.1 ± 2.226.1 ± 2.6
 Max (dB)4.5 ± 3.87.6 ± 2.37.5 ± 1.126.2 ± 2.227.8 ± 1.613.8 ± 4.115.8 ± 3.117.4 ± 2.235.4 ± 1.837.0 ± 1.8
 Rise time (ms)45.5 ± 2.744.2 ± 1.845.2 ± 1.541.6 ± 2.440.9 ± 2.5141.5 ± 8.9150.8 ± 4.5149.6 ± 8.4154.5 ± 3.3145.6 ± 3.2