Academic Journal
Temporal Pitch Perception of Multi-Channel Stimuli by Cochlear-Implant Users
| Title: | Temporal Pitch Perception of Multi-Channel Stimuli by Cochlear-Implant Users |
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| Authors: | Evelien De Groote, Olivier Macherey, John M. Deeks, Stéphane Roman, Robert P. Carlyon |
| Contributors: | Apollo - University of Cambridge Repository |
| Source: | J Assoc Res Otolaryngol |
| Publication Status: | Preprint |
| Publisher Information: | Springer Science and Business Media LLC, 2025. |
| Publication Year: | 2025 |
| Subject Terms: | Male, Adult, Communication Sciences and Disorders, Middle Aged, Pitch perception, Cochlear Implants, Fine structure processing, Cochlear implants, Medicine and Health Sciences, Humans, Female, Original Article, Speech and Hearing Science, Temporal fine structure, Pitch Perception, Aged |
| Description: | Purpose To explore the feasibility of cochlear-implant (CI) processing strategies that aim to improve pitch perception by presenting information on the stimulus temporal fine structure (TFS) in low-frequency channels to the corresponding apical electrodes. Methods Eight users of the MED-EL CI pitch-ranked stimuli consisting of isochronous pulse trains presented concurrently to the four most apical CI electrodes. Results When the same rate was applied to all electrodes, pitch ranks increased with increasing rates up to 200–300 pulses-per-second (pps), consistent with previous research. Presenting rates of 100, 200, 300, and 400 pps to one electrode per rate produced a pitch rank between that of the 100- and 200-pps same-rate stimuli. The assignation of pulse rate to electrode did not have a consistent effect on pitch ranks. However, maximising the delay between pulses on the different electrodes generally produced higher pitch ranks compared to when the between-electrode pulse delay was very short. Conclusion Our results show no evidence that listeners combine the rates of TFS applied to different channels so as to estimate the fundamental frequency but do show that pitch can be affected by between-electrode delays. We conclude that presenting different temporal patterns to adjacent electrodes is unlikely to produce a clear and robust pitch and propose an alternative method for conveying the F0 of complex sounds on multiple electrodes of a CI. |
| Document Type: | Article Other literature type |
| File Description: | application/pdf; text/xml |
| Language: | English |
| ISSN: | 1438-7573 |
| DOI: | 10.1007/s10162-025-00983-4 |
| DOI: | 10.31219/osf.io/97qyp |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/40153148 https://www.repository.cam.ac.uk/handle/1810/385156 https://doi.org/10.1007/s10162-025-00983-4 |
| Rights: | CC BY |
| Accession Number: | edsair.doi.dedup.....ec9432e7bc6ff6e2b6c3e9fb6fdf637d |
| Database: | OpenAIRE |
| ISSN: | 14387573 |
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| DOI: | 10.1007/s10162-025-00983-4 |