PMID- 32339775
OWN - NLM
STAT- MEDLINE
DCOM- 20210823
LR  - 20210823
IS  - 1878-5891 (Electronic)
IS  - 0378-5955 (Linking)
VI  - 392
DP  - 2020 Jul
TI  - Formant frequency discrimination with a fine structure sound coding strategy for 
      cochlear implants.
PG  - 107970
LID - S0378-5955(19)30207-2 [pii]
LID - 10.1016/j.heares.2020.107970 [doi]
AB  - Recent sound coding strategies for cochlear implants (CI) have focused on the 
      transmission of temporal fine structure to the CI recipient. To date, knowledge 
      about the effects of fine structure coding in electrical hearing is poorly 
      charactarized. The aim of this study was to examine whether the presence of 
      temporal fine structure coding affects how the CI recipient perceives sound. This 
      was done by comparing two sound coding strategies with different temporal fine 
      structure coverage in a longitudinal cross-over setting. The more recent FS4 
      coding strategy provides fine structure coding on typically four apical 
      stimulation channels compared to FSP with usually one or two fine structure 
      channels. 34 adult CI patients with a minimum CI experience of one year were 
      included. All subjects were fitted according to clinical routine and used both 
      coding strategies for three months in a randomized sequence. Formant frequency 
      discrimination thresholds (FFDT) were measured to assess the ability to resolve 
      timbre information. Further outcome measures included a monosyllables test in 
      quiet and the speech reception threshold of an adaptive matrix sentence test in 
      noise (Oldenburger sentence test). In addition, the subjective sound quality was 
      assessed using visual analogue scales and a sound quality questionnaire after 
      each three months period. The extended fine structure range of FS4 yields FFDT 
      similar to FSP for formants occurring in the frequency range only covered by FS4. 
      There is a significant interaction (p = 0.048) between the extent of fine 
      structure coverage in FSP and the improvement in FFDT in favour of FS4 for these 
      stimuli. FS4 Speech perception in noise and quiet was similar with both coding 
      strategies. Sound quality was rated heterogeneously showing that both strategies 
      represent valuable options for CI fitting to allow for best possible individual 
      optimization.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Liepins, R
AU  - Liepins R
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria.
FAU - Kaider, A
AU  - Kaider A
AD  - Medical University of Vienna, Center for Medical Statistics, Informatics, and 
      Intelligent Systems, Vienna, Austria.
FAU - Honeder, C
AU  - Honeder C
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria.
FAU - Auinger, A B
AU  - Auinger AB
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria.
FAU - Dahm, V
AU  - Dahm V
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria.
FAU - Riss, D
AU  - Riss D
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria. Electronic address: dominik.riss@meduniwien.ac.at.
FAU - Arnoldner, C
AU  - Arnoldner C
AD  - Medical University of Vienna, Department of Otolaryngology, Head and Neck 
      Surgery, Vienna, Austria.
LA  - eng
PT  - Journal Article
DEP - 20200409
PL  - Netherlands
TA  - Hear Res
JT  - Hearing research
JID - 7900445
SB  - IM
MH  - Acoustic Stimulation
MH  - Adolescent
MH  - Adult
MH  - Aged
MH  - Cochlea/*physiopathology
MH  - Cochlear Implantation/*instrumentation
MH  - *Cochlear Implants
MH  - Comprehension
MH  - Cross-Over Studies
MH  - Electric Stimulation
MH  - Female
MH  - *Hearing
MH  - Hearing Loss/diagnosis/physiopathology/*therapy
MH  - Humans
MH  - Longitudinal Studies
MH  - Male
MH  - Middle Aged
MH  - Noise/adverse effects
MH  - Perceptual Masking
MH  - Persons With Hearing Impairments/psychology/*rehabilitation
MH  - *Pitch Discrimination
MH  - Speech Intelligibility
MH  - *Speech Perception
MH  - Young Adult
OTO - NOTNLM
OT  - Cochlear implants
OT  - Formant discrimination
OT  - Sound coding strategy
OT  - Speech perception
OT  - Temporal fine structure
COIS- Declaration of competing interest AC and RD received research grants by the 
      Implant manufacturer MED-EL.
EDAT- 2020/04/28 06:00
MHDA- 2021/08/24 06:00
CRDT- 2020/04/28 06:00
PHST- 2019/05/14 00:00 [received]
PHST- 2020/03/04 00:00 [revised]
PHST- 2020/04/05 00:00 [accepted]
PHST- 2020/04/28 06:00 [pubmed]
PHST- 2021/08/24 06:00 [medline]
PHST- 2020/04/28 06:00 [entrez]
AID - S0378-5955(19)30207-2 [pii]
AID - 10.1016/j.heares.2020.107970 [doi]
PST - ppublish
SO  - Hear Res. 2020 Jul;392:107970. doi: 10.1016/j.heares.2020.107970. Epub 2020 Apr 
      9.