Speech performance and sound localization abilities in Neurelec Digisonic® SP binaural cochlear implant users

Audiology & Neuro-otology
Nicolas VerhaertEric Truy

Abstract

In this prospective study the outcome of the Digisonic® SP Binaural cochlear implant (CI), a device enabling electric stimulation of both cochleae by a single receiver, was evaluated in 14 postlingually deafened adults after 12 months of use. Speech perception was tested using French disyllabic words in quiet and in speech-shaped noise at +10 dB signal-to-noise ratio. Horizontal sound localization in quiet was tested using pink noise coming from 5 loudspeakers, from -90 to +90° along the azimuth. Speech scores in quiet were 76% (±19.5 SD) in the bilateral condition, 62% (±24 SD) for the better ear alone and 43.5% (±27 SD) for the poorer ear alone. Speech scores in noise were 60% (±27.5 SD), 46% (±28 SD) and 28% (±25 SD), respectively, in the same conditions. Statistical analysis showed a significant advantage of the bilateral use in quiet and in noise (p < 0.05 compared to the better ear). Significant spatial perception benefits such as summation effect (p < 0.05), head shadow effect (p < 0.0001) and squelch effect (p < 0.0005) were noted. Sound localization accuracy improved significantly when using the device in the bilateral condition with an average root mean square of 35°. Compared with published outcomes of usual bilatera...Continue Reading

Citations

Apr 23, 2013·Forensic Science, Medicine, and Pathology·John BerketaLindsay Richards
Sep 11, 2014·Neural Regeneration Research·Yanjun WangXiaoting Li
Feb 27, 2015·Clinical Otolaryngology : Official Journal of ENT-UK ; Official Journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery·N GuevaraS Gallego
Jan 8, 2015·Cochlear Implants International·Charlotte QueratEric Truy
Jun 8, 2013·Brazilian Journal of Otorhinolaryngology·Guilherme Machado de CarvalhoArthur Menino Castilho
Nov 2, 2018·American Journal of Audiology·Jantien L VroegopAndré Goedegebure
Oct 5, 2018·Ear and Hearing·René H Gifford, Michael F Dorman
Oct 3, 2019·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Martin KompisMarco Caversaccio

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cajal Bodies & Gems

Cajal bodies or coiled bodies are dense foci of coilin protein. Gemini of Cajal bodies, or gems, are microscopically similar to Cajal bodies. It is believed that Cajal bodies play important roles in RNA processing while gems assist the Cajal bodies. Find the latest research on Cajal bodies and gems here.

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.