Modeling of Auditory Neuron Response Thresholds with Cochlear Implants

Figure 1

Calculation of the depth of insertion and distance between electrodes and the inner wall of the cochlea. (a) On an axial reconstruction, the large diameter of the cochlea was calculated to estimate the length of the cochlea as described by Escudé et al. (b) On an axial reconstruction, the angle of electrode array insertion was defined as that between the tangeant lines touching the most apical and the most basal electrodes. (c) On the same reconstruction, the distance between each electrode and the inner wall of the cochlea (outlined in blue) was calculated as the shortest orthogonal distance. (d) This calculation was repeated on several reconstructions to evaluate the whole electrode array.

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