View clinical trials related to Hearing Loss.
Filter by:This study aims to investigate the clinical performance of the Osia 3 Sound Processor in comparison to the Osia 2 Sound Processor in adults with mixed or conductive hearing loss or single-sided deafness implanted with an Osia implant. Participants will attend four study visits, where they will complete various hearing assessments using the Osia sound processors.
The objective of this study is to examine whether ABO and Rhesus (Rh) blood group systems have an association with distortion product otoacoustic emission (DPOAE) and transient otoacoustic emission (TEOAE) amplitudes with the hypothesis of blood groups may affect hearing thresholds.
The results of the previous study on auditory effort in young children with cochlear implants show that pupils respond to the presence or the absence of the perceived stimuli. The investigators hypothesize that the perceived sounds will elicit increased pupil dilation compared to the non-perceived sounds and that the hearing threshold as measured with pure tone audiometry will correlate to the results in pupillometry test. The investigators hypothesize that the effect will be visible in all testing groups albeit the relative increase of pupil size with age. Hypothesis confirmed, the investigators will develop a standardised procedure for the auditory signal detection using pupillometry. Such a procedure could represent an important bridge between automatic and behavioral hearing tests. With a more precise test of auditory threshold of young children, post-operative monitoring and fitting of cochlear implants or hearing aids, and rehabilitation procedures, could be considerably more targeted and consequentially more efficient.
The goal of this observational study is to learn about the sound-induced vibration level of certain structures in the middle ear in the normal-hearing population. The targeted structures are part of a chain of structures responsible for conducting sound within the auditory system and so their ability to vibrate normally in response to sound is relevant to the diagnosis of conductive hearing loss. The main questions the study aims to answer are: - What are the mean and variance of the normal sound-induced vibration level at two anatomical locations, the umbo of the malleus and the tip of the incus? - Are there any significant differences in these vibrational responses associated with sex or age? Participants will have their ossicular mobility measured with an investigational medical device that sends light into the middle ear and measures the motion-induced phase shift on light reflected from the target structures when a sound stimulus is presented. Standard hearing tests including audiometry and tympanometry will also be performed to confirm the normal hearing status of participants.
Cochlear implants (CIs) are devices that partially restore hearing for people with severe to profound hearing loss. This research focuses on CI users who use bilaterally implanted devices (two CIs, one on each side) and also "single-sided deafness" (SSD) CI users who use one CI together with good acoustic hearing in their opposite ear. The goal is to measure and understand the impact of large input asymmetries across the two ears. These asymmetries are common in BI-CI listeners and always present in SSD-CI users. Although most CI listeners benefit from a second source of auditory input, this project measures how these asymmetries limit speech understanding and spatial hearing. The long-term goal is countering or compensating for input asymmetries. Electrophysiological measures are used to describe the health of the auditory system. Behavioral measures are used to assess if training improves performance. CT imaging is utilized to describe the placement of the CIs.
Background: Many disorders of the head and neck can affect a person s hearing; balance; smell; taste; swallowing; voice; or speech. These disorders include cancers and genetic and inflammatory diseases. To find better ways to diagnose and treat these disorders, researchers need to study tissues and other biological samples from people who have them. Objective: To collect biological samples for a repository that will be used for research. Eligibility: People of any age with a disorder of the head and neck that requires the taking of biological samples. The conditions may be any that affect hearing; balance; smell; taste; swallowing; voice; or speech. Design: Part 1: Participants will give permission for their leftover tissue samples to be used for research. These are tissue samples from the head and neck that were collected in the course of routine tests and care or other research studies. Information on each participant s age, diagnosis, and previous treatments will also be collected. Part 2: Some participants may be asked for more samples. All those aged 3 years or older will have a physical exam. They will provide blood and saliva samples. A cotton swab or brush will be used to collect cells from the inside of the cheek. Participants 18 years or older may have additional tests. They may provide nasal secretions: A piece of gelfoam or a sponge will be placed in the nose to soak up secretions for 5 to 10 minutes. They may have biopsies: Small samples of tissue will be cut from the skin and the tissue lining the mouth. Samples may be used for genetic testing.
This is a retrospective study designed to collect speech perception results for HiRes Ultra CI and HiRes Ultra 3D CI users as measured in the clinical routine and to confirm the performance of these devices.
This is a retrospective study designed to collect long-term speech perception results for cochlear implants recipients using electro-acoustic-stimulation as measured in the clinical routine and to confirm the performance of sound processors associated with acoustic earhooks.
This study aims to investigate the effect of stimulation parameters and different electrode modes on speech perception in adult cochlear implant recipients.
This study aims to evaluate the safety and efficacy of cochlear implantation for adults with bilateral sensorineural hearing loss who currently do not meet the FDA-approved indications for cochlear implantation. Following cochlear implantation, participants will complete speech perception assessments and questionnaires over the course of seven visits.