Artikel
A laboratory system for recording evoked action potentials (EAPs) with the Med-El PULSARci100 cochlea implant system
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Autoren
Veröffentlicht: | 31. Mai 2005 |
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Gliederung
Text
A PC-based laboratory system driving the PULSARci100 implant system is presented. The applied stimulation patterns can be adjusted in a flexible way (number of pulses, stimulation electrode address, pulse shape, pulse polarity, inter-pulse interval, recording electrode). The system is designed to read back the the recorded data from the implant, plot and analyze them. Optionally the data can exported them into MatlabR. The software supports common artefact cancellation methods. Special stimulation sequences and built-in safety features are implemented. In order to verify the systems linearity and sensitivity, an in vitro test system with a signal generator has been set up. It is shown that a signal amplitude range of approximately 60 dB can be covered. Intraoperative recordings as well as postoperative recordings have been carried out. So far it was possible to record EAPs in most of the subjects. EAP amplitudes from 20 µV to more than 1 mV could be observed. The system setup as well as first data will be presented.