Temporal pitch perception at high rates in cochlear implants

A recent study reported that a group of Med-El COMBI 40 + CI (cochlear implant) users could, in a forced-choice task, detect changes in the rate of a pulse train for rates higher than the 300 pps "upper limit" commonly reported in the literature [ Kong, Y.-Y. , ( 2009 ). J. Acoust. Soc. Am...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2010-05, Vol.127 (5), p.3114-3123
Main Authors: Kong, Ying-Yee, Carlyon, Robert P.
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adult
Aged
Audiometry
Audition
Biological and medical sciences
Choice Behavior
Cochlear Implantation - instrumentation
Cochlear Implants
Correction of Hearing Impairment - psychology
Cues
Diseases of the ear
Ent and stomatology
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Medical sciences
Middle Aged
Perception
Persons With Hearing Impairments - psychology
Persons With Hearing Impairments - rehabilitation
Pitch Perception
Psychoacoustics
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Signal Detection, Psychological
Time Factors
Time Perception
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Summary:A recent study reported that a group of Med-El COMBI 40 + CI (cochlear implant) users could, in a forced-choice task, detect changes in the rate of a pulse train for rates higher than the 300 pps "upper limit" commonly reported in the literature [ Kong, Y.-Y. , ( 2009 ). J. Acoust. Soc. Am. 125 , 1649-1657 ]. The present study further investigated the upper limit of temporal pitch in the same group of CI users on three tasks [pitch ranking, rate discrimination, and multidimensional scaling (MDS)]. The patterns of results were consistent across the three tasks and all subjects could follow rate changes above 300 pps. Two subjects showed exceptional ability to follow temporal pitch change up to about 900 pps. Results from the MDS study indicated that, for the two listeners tested, changes in pulse rate over the range of 500-840 pps were perceived along a perceptual dimension that was orthogonal to the place of excitation. Some subjects showed a temporal pitch reversal at rates beyond their upper limit of pitch and some showed a reversal within a small range of rates below the upper limit. These results are discussed in relation to the possible neural bases for temporal pitch processing at high rates.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3372713