Open AccessEffectiveness of Phantom Stimulation in Shifting the Pitch Percept in Cochlear Implant Users
Author(s) -
Monique A. M. de Jong,
Jeroen J. Briaire,
Jan Dirk Biesheuvel,
Jorien Snel-Bongers,
Stefan Böhringer,
Guy R F M Timp,
Johan H. M. Frijns
Publication year - 2020
Publication title -
ear and hearing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.577
H-Index - 109
eISSN - 1538-4667
pISSN - 0196-0202
DOI - 10.1097/aud.0000000000000845
Subject(s) - cochlear implant , percept , imaging phantom , electrode array , cochlea , electrode , biomedical engineering , audiology , materials science , acoustics , physics , medicine , perception , optics , psychology , neuroscience , quantum mechanics
Phantom electrode stimulation was developed for cochlear implant (CI) systems to provide a lower pitch percept by stimulating more apical regions of the cochlea, without inserting the electrode array deeper into the cochlea. Phantom stimulation involves simultaneously stimulating a primary and a compensating electrode with opposite polarity, thereby shifting the electrical field toward the apex and eliciting a lower pitch percept. The current study compared the effect sizes (in shifts of place of excitation) of multiple phantom configurations by matching the perceived pitch with phantom stimulation to that perceived with monopolar stimulation. Additionally, the effects of electrode location, type of electrode array, and stimulus level on the perceived pitch were investigated.