Comparison of time and frequency based methods for electrode distance estimation from surviving tissue

In this work, time, frequency and time-frequency methods for distance estimation are presented and compared for the electrode distance estimation one-dimensional case, under a constant velocity assumption. Electrical sources are modelled as multipoles or sources with triangular distribution. The estimation is based on these spatial models of the electrical sources and the corresponding electrical fields. Among the methods used, non-linear distance estimation seems to be a robust method. Specific characteristics of the signals (in time domain or frequency domain) are not sufficient for successful estimation. On the other hand, wavelet analysis may describe signal behavior in more detail and thus help improve one´s models