Title: Sensitivity to interaural time differences with combined cochlear implant and acoustic stimulation
Authors: Francart, Tom ×
Brokx, Jan
Wouters, Jan #
Issue Date: Mar-2009
Publisher: Springer-Verlag New York Inc.
Series Title: Journal of the Association for Research in Otolaryngology vol:10 issue:1 pages:131-141
Abstract: The interaural time difference (ITD) is an important cue to localize sound sources. Sensitivity to ITD was measured in eight users of a cochlear implant (CI) in the one ear and a hearing aid (HA) in the other severely impaired ear. The stimulus consisted of an electric pulse train of 100 pps and an acoustic filtered click train. Just-noticeable differences (JNDs) in ITD were measured using a lateralization paradigm. Four subjects exhibited median JNDs in ITD of 156, 341, 254, and 91 mus; the other subjects could not lateralize the stimuli consistently. Only the subjects who could lateralize had average acoustic hearing thresholds at 1,000 and 2,000 Hz better than 100-dB SPL. The electric signal had to be delayed by 1.5 ms to achieve synchronous stimulation at the auditory nerves.
ISSN: 1525-3961
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Experimental Oto-rhino-laryngology
× corresponding author
# (joint) last author

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