title: Effects of electrode array length on frequency-place mismatch and speech perception with cochlear implants.
abstract: Frequency-place mismatch often occurs after cochlear implantation, yet its effect on speech perception outcome remains unclear. In this article, we propose a method, based on cochlea imaging, to determine the cochlear place-frequency map. We evaluated the effect of frequency-place mismatch on speech perception outcome in subjects implanted with 3 different lengths of electrode arrays. A deeper insertion was responsible for a larger frequency-place mismatch and a decreased and delayed speech perception improvement by comparison with a shallower insertion, for which a similar but slighter effect was noticed. Our results support the notion that selecting an electrode array length adapted to each individual's cochlear anatomy may reduce frequency-place mismatch and thus improve speech perception outcome.
authors: ENT Department and Montpellier 1 University, Gui de Chauliac University Hospital, Montpellier, France.
authors: Frederic
authors: F
authors: Venail
authors: Caroline
authors: C
authors: Mathiolon
authors: Sophie
authors: S
authors: Menjot de Champfleur
authors: Jean Pierre
authors: JP
authors: Piron
authors: Marielle
authors: M
authors: Sicard
authors: Françoise
authors: F
authors: Villemus
authors: Marie Aude
authors: MA
authors: Vessigaud
authors: Françoise
authors: F
authors: Sterkers-Artieres
authors: Michel
authors: M
authors: Mondain
authors: Alain
authors: A
authors: Uziel
mesh_terms: D000293:Adolescent; D000328:Adult; D003051:Cochlea / Q000000981:diagnostic imaging* / Q000601:surgery; D019929:Cochlear Implantation / Q000379:methods; D003054:Cochlear Implants; D003638:Deafness / Q000534:rehabilitation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010898:Pitch Perception; D013067:Speech Perception; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D055815:Young Adult