One-year results of the banded neural response imaging study.
OBJECTIVE
To investigate the relationship between single-channel and banded neural response imaging (NRI) responses and to evaluate whether banded NRI measurements are better correlated to fitting parameters than single-channel NRI measurements.


METHODS
Nineteen profoundly deaf subjects implanted with a HiRes 90K cochlear implant from Advanced Bionics Corporation (Valencia, CA).


METHODS
Neural response imaging thresholds (tNRIs; single-channel and banded tNRIs) were measured intraoperatively; at first fitting; and after 3, 6, and 12 months of implant use. Relationships between those measurements and correlations between those measurements and implant program parameters were investigated.


METHODS
Single-channel and banded tNRI collected at each measurement session.


RESULTS
Banded NRI could be recorded reliably and was not more time-consuming than the routine single-channel NRI. Significant correlations (Pearson R; p < 0.05) were observed between first-fitting banded tNRI and most comfortable levels at 12 months, with a higher level of significance than the correlations observed with single-channel tNRI.


CONCLUSIONS
Banded NRI may be a more appropriate fitting tool than single-channel NRI. However, the sample size was small, and more data are necessary to confirm these findings.
Akin
Istemihan
I
SB Ankara Diskapi Training and Research Hospital, Ankara, Turkey.
Mutlu
Murad
M
Kuran
Gokhan
G
Dincer
Hilal
H
Arnold
Laure
L
Boyle
Patrick
P
D000293:Adolescent; D001701:Bionics / Q000295:instrumentation; D002648:Child; D002675:Child, Preschool; D003054:Cochlear Implants; D003638:Deafness / Q000601:surgery*; D003952:Diagnostic Imaging; D006801:Humans; D007223:Infant; D009434:Neural Pathways / Q000502:physiology*; D012984:Software