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Behavioral and physiological correlates of temporal pitch perception in electric and acoustic hearing

Behavioral and physiological correlates of temporal pitch perception in electric and acoustic hearing
Behavioral and physiological correlates of temporal pitch perception in electric and acoustic hearing
In the “4–6” condition of experiment 1, normal-hearing (NH) listeners compared the pitch of a bandpass-filtered pulse train, whose inter-pulse intervals (IPIs) alternated between 4 and 6 ms, to that of isochronous pulse trains. Consistent with previous results obtained at a lower signal level, the pitch of the 4–6 stimulus corresponded to that of an isochronous pulse train having a period of 5.7 ms—longer than the mean IPI of 5 ms. In other conditions the IPI alternated between 3.5–5.5 and 4.5–6.5 ms. Experiment 2 was similar but presented electric pulse trains to one channel of a cochlear implant. In both cases, as overall IPI increased, the pitch of the alternating-interval stimulus approached that of an isochronous train having a period equal to the mean IPI. Experiment 3 measured compound action potentials (CAPs) to alternating-interval stimuli in guinea pigs and in NH listeners. The CAPs to pulses occurring after 4-ms intervals were smaller than responses to pulses occurring after 6-ms intervals, resulting in a modulated pattern that was independent of overall level. The results are compared to the predictions of a simple model incorporating auditory-nerve (AN) refractoriness, and where pitch is estimated from first-order intervals in the AN response.
bioelectric potentials, hearing, neurophysiology, psychology
0001-4966
973-985
Carlyon, R.P.
aee00939-d7df-449a-8a31-8620e0713a07
Mahendran, S.
af7d2642-6824-4cd1-b93b-77900e0647c2
Deeks, J.M.
ffd70020-ccd2-481d-9fe9-332bdafdbd48
Long, C.J.
9f17cce3-20b6-4154-93b8-cc72e938b784
Axon, P.
107a41e2-7caa-4ae8-997f-5953b9470cc6
Baguley, D.
6a616b86-56c2-4b4a-bd6f-7cb472865198
Bleeck, S.
c888ccba-e64c-47bf-b8fa-a687e87ec16c
Winter, I.M.
c816c472-68e4-47fb-833d-db8b8d7fde27
Carlyon, R.P.
aee00939-d7df-449a-8a31-8620e0713a07
Mahendran, S.
af7d2642-6824-4cd1-b93b-77900e0647c2
Deeks, J.M.
ffd70020-ccd2-481d-9fe9-332bdafdbd48
Long, C.J.
9f17cce3-20b6-4154-93b8-cc72e938b784
Axon, P.
107a41e2-7caa-4ae8-997f-5953b9470cc6
Baguley, D.
6a616b86-56c2-4b4a-bd6f-7cb472865198
Bleeck, S.
c888ccba-e64c-47bf-b8fa-a687e87ec16c
Winter, I.M.
c816c472-68e4-47fb-833d-db8b8d7fde27

Carlyon, R.P., Mahendran, S., Deeks, J.M., Long, C.J., Axon, P., Baguley, D., Bleeck, S. and Winter, I.M. (2008) Behavioral and physiological correlates of temporal pitch perception in electric and acoustic hearing. Journal of the Acoustical Society of America, 123 (2), 973-985. (doi:10.1121/1.2821986). (PMID:2279014)

Record type: Article

Abstract

In the “4–6” condition of experiment 1, normal-hearing (NH) listeners compared the pitch of a bandpass-filtered pulse train, whose inter-pulse intervals (IPIs) alternated between 4 and 6 ms, to that of isochronous pulse trains. Consistent with previous results obtained at a lower signal level, the pitch of the 4–6 stimulus corresponded to that of an isochronous pulse train having a period of 5.7 ms—longer than the mean IPI of 5 ms. In other conditions the IPI alternated between 3.5–5.5 and 4.5–6.5 ms. Experiment 2 was similar but presented electric pulse trains to one channel of a cochlear implant. In both cases, as overall IPI increased, the pitch of the alternating-interval stimulus approached that of an isochronous train having a period equal to the mean IPI. Experiment 3 measured compound action potentials (CAPs) to alternating-interval stimuli in guinea pigs and in NH listeners. The CAPs to pulses occurring after 4-ms intervals were smaller than responses to pulses occurring after 6-ms intervals, resulting in a modulated pattern that was independent of overall level. The results are compared to the predictions of a simple model incorporating auditory-nerve (AN) refractoriness, and where pitch is estimated from first-order intervals in the AN response.

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More information

Published date: 2008
Keywords: bioelectric potentials, hearing, neurophysiology, psychology
Organisations: Human Sciences Group

Identifiers

Local EPrints ID: 57829
URI: https://eprints.soton.ac.uk/id/eprint/57829
ISSN: 0001-4966
PURE UUID: 7ff75220-a9d5-4de1-a8a7-660908019582
ORCID for S. Bleeck: ORCID iD orcid.org/0000-0003-4378-3394

Catalogue record

Date deposited: 20 Aug 2008
Last modified: 14 Mar 2019 01:41

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