Temporal Regularity Detection and Rate Discrimination in Cochlear-Implant Listeners.
Cochlear implants (CIs) convey fundamental-frequency information using primarily temporal cues. However, temporal pitch perception in CI users is weak and, when measured using rate discrimination tasks, deteriorates markedly as the rate increases beyond 300 pulses-per-second. Rate pitch may be weak because the electrical stimulation of the surviving neural population of the implant recipient may not allow accurate coding of inter-pulse time intervals. If so, this phenomenon should prevent listeners from detecting when a pulse train is physically temporally jittered. Performance in a jitter detection task was compared to that in a rate-pitch discrimination task. Stimuli were delivered using direct stimulation in cochlear implants, on a mid-array and an apical electrode, and at two different rates (100 and 300 pps). Average performance on both tasks was worse at the higher pulse rate and did not depend on electrode. However, there was a large variability across and within listeners that did not correlate between the two tasks, suggesting that rate-pitch judgement and regularity detection are to some extent limited by task-specific processes. Simulations with filtered pulse trains presented to NH listeners yielded broadly similar results, except that, for the rate discrimination task, the difference between performance with 100- and 300-pps base rates was smaller than observed for CI users.
MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, CB2 7EF, Cambridge, UK. etienne.gaudrain@cnrs.fr.|CNRS UMR 5292, Lyon Neuroscience Research Center, Auditory Cognition and Psychoacoustics, Université Lyon 1, 50 av. Tony Garnier, 69366, Lyon Cedex 7, France. etienne.gaudrain@cnrs.fr.|Department of Otorhinolaryngology, University Medical Center Groningen-University of Groningen, Huispostcode BB20, PO Box 30.001, 9700 RB, Groningen, Netherlands. etienne.gaudrain@cnrs.fr.
Etienne
http://orcid.org/0000-0003-0490-0295
E
Gaudrain
MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, CB2 7EF, Cambridge, UK.
John M
JM
Deeks
MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, CB2 7EF, Cambridge, UK.
Robert P
RP
Carlyon
D000368:Aged; D000369:Aged, 80 and over; D001307:Auditory Perception; D003054:Cochlear Implants; D006801:Humans; D008875:Middle Aged; D013997:Time Factors
cochlear implant; pitch; temporal resolution
J Acoust Soc Am. 1987 Jul;82(1):106-15
3624633
J Acoust Soc Am. 2003 Sep;114(3):1516-28
14514205
Proc Natl Acad Sci U S A. 2008 Jan 15;105(2):814-7
18182489
J Speech Hear Res. 1985 Sep;28(3):455-62
4046587
Adv Exp Med Biol. 2013;787:363-71
23716242
J Acoust Soc Am. 2010 May;127(5):3114-23
21117760
J Acoust Soc Am. 2016 Apr;139(4):1578
27106306
J Assoc Res Otolaryngol. 2015 Oct;16(5):641-52
26105749
Hear Res. 2004 Oct;196(1-2):49-57
15464301
J Acoust Soc Am. 2002 Sep;112(3 Pt 1):1009-25
12243150
Behav Res Methods. 2005 Aug;37(3):379-84
16405133
BMJ. 1995 Mar 11;310(6980):633
7703752
J Neurophysiol. 2012 Aug 1;108(3):714-28
22592306
J Acoust Soc Am. 2000 Sep;108(3 Pt 1):1170-80
11008818
J Acoust Soc Am. 1994 Jun;95(6):3529-40
8046144
J Acoust Soc Am. 2010 May;127(5):2997-3008
21117749
Hear Res. 1983 Aug;11(2):157-89
6619003
Hear Res. 1985 Apr;18(1):41-55
3839786
Ann N Y Acad Sci. 1983;405:295-306
6223552
J Acoust Soc Am. 1999 Jan;105(1):347-57
9921661
BMJ. 1995 Feb 18;310(6977):446
7873953
Br J Audiol. 2000 Aug;34(4):205-24
10997450
J Acoust Soc Am. 2009 Mar;125(3):1649-57
19275322
Audiol Neurootol. 2013;18(4):247-60
23881208
Trends Amplif. 2010 Jun;14(2):84-95
20724356