View clinical trials related to Cochlear Implants.
Filter by:MED-EL Cochlear Implants (CI) provide auditory sensations via electrical stimulation of the auditory pathways for severely to profoundly hearing-impaired individuals who obtain little or no benefit from acoustic amplification in the best aided condition. Front-end processing of acoustic signals picked up by the audio processor is routinely applied to provide optimal hearing performance under varying listening conditions. Automatic Sound Management (ASM) was introduced by MED-EL with the TEMPO+ audio processor. With the new SONNET 2 audio processor, ASM 3.0 was implemented and the features noise reduction, transient reduction and an automatic scene classifier were added. This study will investigate the impact of ASM 3.0 as implemented in the SONNET 2 on CI users' speech performance and their subjective quality of hearing.
Investigation of a new ECoChG system (Electrocochleography) during the surgical insertion of cochlear implants, for patients with Advanced Bionics devices. The sound recordings created may be useful in aiding the surgeon to better implant the patient by letting him or her know if they are damaging the ear during implantation in real time Patients will be followed up for 1 year post surgery within our trial, and have a further 3 ECochGs performed in the clinic setting, (6 weeks, 6 months, 1 year) through their implants.
Pitch perception and memory are central in auditory cognition, in particular for sound source segregation and recognition, speech prosody and music processing. Here the investigator assess pitch perception and memory in hearing-impaired listeners wearing cochlear implant(s) and listeners with congenital amusia, both compared with control listeners. Behavioral, EEG, and MEG measures are collected in audio and audio-visual contexts to characterize pitch processing deficits, and test a pitch training program.
This project will complete a long-term follow up for children that have received cochlear implants (CI) early in life and had their CI's programmed based on objective measurements. At Sahlgrenska University Hospital in Gothenburg, generally, all younger children (0-3 years), the last ten years, had their CI's programmed based on objective measurements. The programming of the CI carried out during the first year after the surgical insertion is done on the foundation of the objective measurements and is generally what the child will live with thereafter. This method also seem to be close to other clinics in Sweden and the rest of the world, however, there are no specific guidelines regarding the how the programming of the CI is to be carried out on small children. To this date there are no studies, to our knowledge, that have confirmed the validity of using these objective measurements and if it is the best for the child. We therefore aim to do a long term follow up on children that have received CI and programmed this way, and study if there would be beneficial to redo the programming when the child is old enough to actively participate. The aim with this project is evaluate how suitable it is to mainly use objective measurements when programming the cochlear implant and, in addition to this, examine if the children's hearing can be improved if the programming is based on the behavioral measurements of sound when the children are old enough to participate in such. It will examine what happens with the end result if the programming foundation differentiates from one another; if there are any measurable differences in hearing skills. The result from this project expects to generate knowledge that is highly important for those working with small children receiving CI's, and by extension it will benefit the children that rely on this device in there every day life.
Cochlear implantation is performed in children with sensorineural hearing loss to restore hearing. Fifty percent of children with sensory neural hearing loss, who are candidates for cochlear implant, have vestibular (inner ear) dysfunction prior to surgery. Anatomically, the cochlea, semicircular canals, and otolith organs are located in close proximity in the inner ear and any procedure in the cochlea may affect the vestibular system, resulting in subsequent balance impairment. In addition, the process of implantation often results in further suppression of vestibular function necessary to develop normal balance. Vestibular dysfunction predisposes these children to balance impairments that can affect the normal development of gross motor skills such as sitting, standing, and walking. These balance and gross motor deficits may predispose the child to difficulties with safe community participation resulting in lower quality of life for the child and family. Evidence in the literature suggests that children with vestibular loss do not recover to the same levels as their peers, especially in the area of activities requiring vestibular input for balance. The purpose of this descriptive study is to examine balance, vestibular function, and gross motor skills in children following cochlear implantation over a period of one year. Children, ages 1 year to 5 years will be tested post cochlear implant , and at 6 and 12 months subsequent to initial testing, using clinically based tests of vestibular impairment (head impulse test, post rotary nystagmus or head shake nystagmus), balance (Pediatric Balance Scale) and gross motor skill development (Peabody Developmental Motor Scales, 2nd edition). Quality of life will be assessed using the Life-H (Assessment of Life Habits).
The objective is to investigate the new Naida CROS device in adult recipients including chronic phases and to generate some preliminary pre-launch data. The formal study objectives are to compare the speech intelligibility in quiet and noise when using the CROS device with the Naida CI Q70 processor versus the Naida CI processor alone in quiet and noise conditions. Subjects will be tested with and without CROS at the baseline visit and then at follow-up visits taking place one month and three months after baseline. Subjects will use the new device at home between the first two visits appointments and then will only use the Naida CI processor for two additional weeks to better evaluate the handicap of not having access to contralateral signal input. There will be four visits to the centre in total. Subjective feedback will be collected through questionnaire like the APHAB and Speech, Spatial and Qualities of Hearing Scale (SSQ). A customised questionnaire focusing usability and benefit of the CROS will also be administered. Additional interest of the study will be to evaluate any acclimatisation effect with the CROS device both objectively and subjectively.
Objective: To evaluate the diagnostic concordance between multislice computed tomography (MSCT) and cone beam computed tomography (CBCT) in the early postoperative assessment of patients after cochlear implantation. Study Design: Prospective, randomized, single-center, interventional, pilot study on the diagnostic performance of a medical device. Setting: Tertiary referral center. Patients: Patients aged over 18 years requiring a CT scan after cochlear implant surgery. Interventions: Nine patients were implanted with electrode arrays from three different manufacturers, including one bilateral. High-resolution MSCT and CBCT were then performed, and 2 experienced radiologists blinded to the imaging modality evaluated the randomized images, twice.
The primary objective of this research is to evaluate the relationships between multiple data from cochlear implant (CI) adult users to and to estimate predictive models of their fitting parameters. In a group of patients, the Electrically-evoked Compound Action Potentials (ECAP) will be collected intra-operatively and the correlation with demographic data (deafness duration, age deafness onset, etiology, duration of cochlear implant use of CI), auditory performances and subjective measures used for implant fitting (hearing threshold and most comfortable level) will be calculated. In a second group of experienced users (more than 9months of use of their CI), ECAP and Electrically-evoked Auditory Brainstem Response (EABR) will be collected after 9 months of CI experience and after 12 months or more of use. Correlation analyzes with demographic data, performance and fitting parameters will be performed as well. Statistical predictive models for both fitting at the activation or in experienced users should be developed according to the correlation analysis. The secondary objective is to evaluate the effects of simultaneous stimulation on hearing performances. Simultaneous stimulations will be delivered in one ear (bimodal condition) in patients using an Electro-Acoustic Stimulation device (EAS) or in the two ears (binaural condition) for bilateral CI users. ECAP, EABR and speech perception will be measured and compared in the different conditions.
The electrical stimulation generated by the Cochlear Implant (CI) may improve the neural synchrony and hence contribute to the development of auditory skills in patients with Auditory Neuropathy / Auditory Dys-synchrony (AN/AD). Goal: The goal of the research was to evaluate the auditory performance and the characteristics of the electrically evoked compound action potential (ECAP) in a group of 18 cochlear implants recipients with AN/AD.The auditory perception was evaluated by sound field thresholds and speech perception tests. To evaluate ECAP's characteristics, the threshold and amplitude of neural response together with the amplitude growth and recovery functions were evaluated at 80Hz stimulation rate.The CI was seen as an efficient resource to develop auditory skills in 94% of the AN/AD patients considered by the research. The auditory perception benefits as well as the possibility to measure the ECAP showed that the electrical stimulation could compensate the neural dys-synchrony caused by the AN/AD. However, a unique clinical procedure cannot be proposed at this point. Therefore, a careful and complete evaluation of each AN/AD patient before recommending the Cochlear Implant is advised