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- W4249655964 abstract "Many cochlear implant (CI) users achieve remarkable success in understanding speech, but a key limitation affecting CI development is poor understanding of factors that contribute to individual performance. The spectral-ripple discrimination test offers a time-efficient, nonlinguistic measure that is correlated with perception of speech and music by CI users. What makes this test time-efficient, and thus clinically relevant, is that it is a “one-point” measure: Only the ripple density parameter is varied. However, there is controversy within the CI field about what this one-point test actually measures. The current work examines and models the relationship between thresholds in the spectral-ripple test, in which stimuli are presented acoustically, and interaction indices measured under the controlled conditions afforded by a research processor. Preliminary results show that (1) within individual subjects, there can be large variations in the interaction indexp; (2) interaction indices generally decrease with increasing electrode separation; (3) ripple discrimination thresholds increase with decreasing mean interaction index; and (4) trends in ripple thresholds predicted by a phenomenological model are consistent with psychophysical results. Results are consistent with the use of cross-channel cues by CI users in spectral-ripple discrimination. [Research supported by NIH-NIDCD Grant Nos. F32-DC011431, R01-DC007525, P30-DC04661, and L30-DC008490 and the Advanced Bionics Corporation.]" @default.
- W4249655964 created "2022-05-12" @default.
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- W4249655964 date "2011-04-01" @default.
- W4249655964 modified "2023-09-26" @default.
- W4249655964 title "Relationship between channel interaction and spectral‐ripple discrimination in cochlear implant users." @default.
- W4249655964 doi "https://doi.org/10.1121/1.3588869" @default.
- W4249655964 hasPublicationYear "2011" @default.
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