title: Visualization of stimulation patterns in cochlear implants: application to event-related potentials (P300) in cochlear implant users.
abstract: Auditory P300 potentials obtained in cochlear implant users were evoked with tone bursts designed to reflect the frequency stimulation patterns of intracochlear electrodes. To visualize these stimulation patterns in MED-EL COMBI 40+ cochlear implants, we calculated color-coded plots of the charge of each stimulus pulse as a function of time and stimulation channel (stimulograms). The aim of this study was to investigate the effect of stimulation patterns on event-related potentials, such as the P300. The influence of electrode separation on the P300 response in postlingually deaf adults using a cochlear implant is demonstrated in two examples.
authors.affiliation: Department of Experimental Audiology, Otto von Guericke University Magdeburg, Magdeburg, Germany. muehler@med.uni-magdeburg.de
authors.forename: Roland
authors.initials: R
authors.lastname: Mühler
authors.forename: Michael
authors.initials: M
authors.lastname: Ziese
authors.forename: Zurab
authors.initials: Z
authors.lastname: Kevanishvili
authors.forename: Marcus
authors.initials: M
authors.lastname: Schmidt
authors.forename: Hellmut
authors.initials: H
authors.lastname: von Specht
mesh_terms: D000328:Adult; D001300:Audiometry, Evoked Response / Q000379:methods; D003054:Cochlear Implants; D004558:Electric Stimulation; D004594:Electrophysiology; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D034381:Hearing Loss / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged