title: Binaural benefit for speech recognition with spectral mismatch across ears in simulated electric hearing.
abstract: The present study investigated the effects of binaural spectral mismatch on binaural benefits in the context of bilateral cochlear implants using acoustic simulations. Binaural spectral mismatch was systematically manipulated by simulating changes in the relative insertion depths across ears. Sentence recognition, presented unilaterally and bilaterally, were measured in normal-hearing listeners in quiet and noise at +5 dB signal-to-noise ratio. Significant binaural benefits were observed when the interaural difference in insertion depth was 1 mm or less. This result suggests a dependence of the binaural benefit on redundant speech information, rather than on similarity in performance across ears.
authors: Communication and Neuroscience Division, House Ear Institute, Los Angeles, CA 90057, USA. yyoon@hei.org
authors: Yang-soo
authors: YS
authors: Yoon
authors: Aiguo
authors: A
authors: Liu
authors: Qian-Jie
authors: QJ
authors: Fu
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001309:Auditory Threshold; D019929:Cochlear Implantation / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise / Q000009:adverse effects*; D010470:Perceptual Masking; D021641:Recognition, Psychology; D012815:Signal Processing, Computer-Assisted; D013067:Speech Perception; D013069:Speech Reception Threshold Test; D055815:Young Adult