Pitch and Loudness Perception by Cochlear Implant Listeners: Psychophysics and Objective Measures
Cochlear implants (CIs) have restored some sense of hearing to more than 120 000 people worldwide. While most patients show good scores of speech recognition in quiet, a large majority of them also struggle in more challenging listening situations, such as speech in noise or music. This project aims to understand the basic mechanisms of electrical stimulation of the auditory nerve, in order to identify the important cues that the electrical signal should convey and to possible improve sound perception by CI users.
|Study Design:||Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||Pitch and Loudness Perception by Cochlear Implant Listeners: Psychophysics and Objective Measures|
- Identify waveforms aimed to improve sound perception by CI recipients [ Time Frame: 2 YEARS ] [ Designated as safety issue: No ]
- To correlate the results of our measures psychophysiques with recordings électrophysiologiques of the neuronal activity of the hearing nerve. [ Time Frame: 2 YEARS ] [ Designated as safety issue: No ]
|Study Start Date:||January 2011|
|Study Completion Date:||March 2012|
|Primary Completion Date:||March 2012 (Final data collection date for primary outcome measure)|
This study will take place in the ENT department of La Timone hospital in Marseille, where more than 120 adults have been implanted. Our study will comprise several phases, including (1) temporal coding of pitch, (2) spatial coding of pitch, and (3) loudness perception. Eight adult implant users will be recruited for each of these phases.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01284790
|Assistance Publique Hopitaux de Marseille|
|Marseille, France, 13354|
|Study Director:||BERNARD BELAIGUES||Assistance Publique hôpitaux de Marseille|