Show simple item record

dc.contributor.authorLamping, W
dc.contributor.authorDeeks, JM
dc.contributor.authorMarozeau, J
dc.contributor.authorCarlyon, RP
dc.date.accessioned2020-12-09T22:15:59Z
dc.date.available2020-12-09T22:15:59Z
dc.date.issued2020
dc.identifierpii: 10.1007/s10162-020-00768-x
dc.identifier.citationLamping, W., Deeks, J. M., Marozeau, J. & Carlyon, R. P. (2020). The Effect of Phantom Stimulation and Pseudomonophasic Pulse Shapes on Pitch Perception by Cochlear Implant Listeners. JARO-JOURNAL OF THE ASSOCIATION FOR RESEARCH IN OTOLARYNGOLOGY, 21 (6), pp.511-526. https://doi.org/10.1007/s10162-020-00768-x.
dc.identifier.issn1525-3961
dc.identifier.urihttp://hdl.handle.net/11343/252906
dc.description.abstractIt has been suggested that a specialized high-temporal-acuity brainstem pathway can be activated by stimulating more apically in the cochlea than is achieved by cochlear implants (CIs) when programmed with contemporary clinical settings. We performed multiple experiments to test the effect on pitch perception of phantom stimulation and asymmetric current pulses, both supposedly stimulating beyond the most apical electrode of a CI. The two stimulus types were generated using a bipolar electrode pair, composed of the most apical electrode of the array and a neighboring, more basal electrode. Experiment 1 used a pitch-ranking procedure where neural excitation was shifted apically or basally using so-called phantom stimulation. No benefit of apical phantom stimulation was found on the highest rate up to which pitch ranks increased (upper limit), nor on the slopes of the pitch-ranking function above 300 pulses per second (pps). Experiment 2 used the same procedure to study the effects of apical pseudomonophasic pulses, where the locus of excitation was manipulated by changing stimulus polarity. A benefit of apical stimulation was obtained for the slopes above 300 pps. Experiment 3 used an adaptive rate discrimination procedure and found a small but significant benefit of both types of apical stimulation. Overall, the results show some benefit for apical stimulation on temporal pitch processing at high pulse rates but reveal that the effect is smaller and more variable across listeners than suggested by previous research. The results also provide some indication that the benefit of apical stimulation may decline over time since implantation.
dc.languageEnglish
dc.publisherSPRINGER
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleThe Effect of Phantom Stimulation and Pseudomonophasic Pulse Shapes on Pitch Perception by Cochlear Implant Listeners
dc.typeJournal Article
dc.identifier.doi10.1007/s10162-020-00768-x
melbourne.affiliation.departmentMelbourne Conservatorium of Music
melbourne.source.titleJARO: Journal of the Association for Research in Otolaryngology
melbourne.source.volume21
melbourne.source.issue6
melbourne.source.pages511-526
dc.rights.licenseCC BY
melbourne.elementsid1462968
melbourne.contributor.authorMarozeau, Jeremy
dc.identifier.eissn1438-7573
melbourne.accessrightsOpen Access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record