Modeling of Auditory Neuron Response Thresholds with Cochlear Implants

Figure 6

Modeling of NRT threshold as a function of characteristic auditory neuron frequency ((a): univariate regression, (b): multivariate regression including other variables). As can be seen, the prediction of NRT threshold level (black line) with 95% confidence interval (dashed lines), either univariate (a) or adjusted (b) for impedance and scalar placement (variables significantly associated with NRT threshold) shows an aspect of  “double bump” curve with a trend to thresholds elevation along with the increase of characteristic frequency of auditory neurons.

(a)

(b)