Active clinical trials for "Hearing Loss"

The purpose of this study is to investigate the effect of nonlinear signal processing algorithms on speech perception.

Mutual exclusivity is a word learning constraint in which the learner assumes that a given word refers to only one category of objects. In spoken languages, mutual exclusivity has been demonstrated in monolingual children as young as 17 months and cross-linguistically, while multilingual learners show an attenuated mutual exclusivity bias. Mutual exclusivity has not been robustly demonstrated in deaf children acquiring American Sign Language (ASL). Further, it is unclear if mutual exclusivity applies to those learning both a signed and a spoken language. Like unimodal bilinguals, bimodal bilingual (BiBi) children learn two words for an object, but these words are separated by modality. A BiBi child could therefore assume that all objects have two words (like unimodal bilinguals) or that all objects have one spoken word and one sign (within-modality mutual exclusivity). The goals of the current study are to demonstrate mutual exclusivity in monolingual deaf children acquiring ASL, and to determine if BiBi deaf children utilize mutual exclusivity within each modality.

Amplification is a well-established, evidence-based front-line treatment for those with impaired communication secondary to Age Related Hearing Loss (ARHL). ARHL is the most prevalent cause of communication impairment among older adults. The challenge in treating ARHL is identifying a care model that effectively promotes adherence to individualized-treatment recommendations allowing the end-user to self-manage hearing loss with appropriate support. This proposal compares the two most common models of care for ARHL provided to adults in assisted living/personal care communities. The Consult Model (i.e., usual care) is an acute care strategy, relying on a monthly Audiologist visit to the facility. The Engage Model is a chronic care approach to support hearing loss self-management of ARHL. Engage includes (a) hearing screening for all residents, (b) an individualized communication plan for those with an identified hearing loss (e.g., one-to-one, group, telephone, television plans, hearing aid trouble shooting, communication strategies, etc.), (c) provision of simple, non-custom amplifiers, (d) referral to audiology if needed, and (e) ongoing support provided by trained personnel (Communication Facilitator) under the supervision of the audiologist.

The Apple Hearing Study is a partnership between the University of Michigan and Apple to study sound exposure and its impact on hearing health. This groundbreaking study will advance the understanding of how hearing could be impacted over time by exposure to sound at certain levels. The investigators will measure headphone and environmental sound exposures over time among participants, and determine how these exposures impact hearing and stress levels. US residents who own an iPhone, download the Apple Research app and consent to participate will be randomly assigned to two groups, one with a "Basic" user interface in the Research app, and one with an "Advanced" user interface. Users in the "Advanced" group will receive additional information about their exposures and be given additional surveys and hearing tests based on their music and environmental sound exposures. The study will provide investigators with a better understanding of listening behavior and its overall impact on hearing health. This information will in turn help guide public health policy and prevention programs designed to protect and promote hearing health in the US and globally.

Tinnitus, the perception of sound in the absence of an external acoustic stimulus. Tinnitus is often perceived inside the head rather than the ear and is a common condition with a prevalence estimated between 10 and 15% in adults. Between 1 and 3% of this population are having a significant impact on their quality of life. Despite its high prevalence, the underlying mechanisms of tinnitus still remain unclear. The majority of tinnitus cases associated with some degree of hearing loss, making hearing loss the biggest risk factor for tinnitus. Recently, it has been suggested that hearing deficits, such as speech-in-noise difficulty, can exist in the absence of any overt hearing loss within the audiometric range (0.125-8 kHz). This is referred to as "hidden hearing loss" and has been suggested to be associated with hearing loss at above-audiometric (> 8 kHz) frequencies. This project is aimed at studying the underlying mechanisms of tinnitus and the possible relation with overt or hidden hearing loss. Specifically, the investigators want to test the hypothesis that tinnitus is caused by maladaptive plasticity arising as a result of auditory input deprivation. This idea is supported by the finding that tinnitus may disappear when the hearing, and thus auditory input, recover. Disruptions at lower levels of the auditory pathway could lead to alterations in synaptic transmission and neurotransmitter release in more central regions of the auditory system (e.g., in the auditory cortex). This may create an imbalance between neuronal excitation and inhibition, and re-routing of auditory pathways, leading to abnormal neural excitability and connectivity. In this study, the investigators question whether auditory cortex disinhibition is specifically related to tinnitus, or is a consequence of hearing loss. To answer this question, the investigators propose to conduct a study that aims to investigate the inhibition mechanism by quantifying GABA concentration level, neural activity and functional connectivity strength of auditory cortex using non-invasive imaging techniques, namely Magnetic Resonance Spectroscopy (MRS) and functional Magnetic Resonance Imaging (fMRI). The investigators expected to possibly provide a tinnitus biomarker, and this may help to direct future treatments.

Main objective: Investigate on new cochlear implanted patients whether the FineHearing strategy of the MED-EL cochlear implant gives better results on musical perception if the depth of stimulation (stimulation or not of the apical areas) is greater. Secondary objectives: Evaluate the effect of stimulation depth on vocal audiometric results, results of differential frequency threshold test and on qualitative sound perception.

Normal-hearing participants aged 18-25 with and without musical training will listen to a series of short musical samples that have been recorded through hearing aids. The music will be played at a comfortable listening level. Subjects will use the computer to rate the sound quality of the music on a 7-point Likert scale.

The prevalence of childhood hearing loss in rural Alaska is disproportionately high and predominately infection-related. With preventive screenings and access to health care, much of childhood hearing loss is preventable. Although state-mandated school screening helps identify children with hearing loss, loss to follow-up is pervasive and exacerbated by a scarcity of specialists in rural regions. A mixed methods cluster randomized trial conducted in northwest Alaska demonstrated that telemedicine can significantly reduce loss to follow-up. This stepped wedge trial, in partnership with Southcentral Foundation, will build on this existing work to develop a model that can be scaled in diverse environments. We will adapt and implement a new telemedicine intervention called Specialty Telemedicine Access for Referrals (STAR). This trial will be conducted in 3 regions in rural Alaska that represent multiple healthcare systems. Based on stakeholder feedback and evidence generated from the previous trial, an enhanced mobile health (mHealth) hearing screening will be implemented in all participating schools prior to the STAR intervention, and the telemedicine referral to specialty care (STAR intervention) will be moved from the clinic directly into the school. This stepped-wedge cluster randomized trial is part of a larger hybrid type 1 effectiveness-implementation trial. The stepped wedge trial will evaluate the effectiveness of the STAR intervention in reducing loss to follow-up from referred school hearing screening in 3 regions of Alaska: Kodiak, Petersburg and Lower Yukon (n=23 schools, ~2,015 K-12 students/year). The STAR Intervention will be compared to the standard referral of a letter home to families. Cluster randomization at the level of school will be performed, with schools (clusters) randomized to one of two sequences. The effectiveness outcome (i.e., proportion of children who receive follow-up) will be evaluated over three academic years (2023-2026), with STAR rolled out in a stepwise manner for each of the two sequences (academic year 2024-2025 for sequence 1 and academic year 2025-2026 for sequence 2). The control periods for each sequence will be academic year 2023-2024 for sequence 1 and academic years 2023-2024 and 2024-2025 for sequence 2. Enhanced screening will be rolled out to both sequences at the same time (i.e., non-randomized) beginning academic year 2023-2024. An implementation evaluation will be conducted to refine and adapt the enhanced hearing screening and STAR intervention throughout the trial. Implementation data will be collected starting academic year 2022-2023 and then annually for each of the subsequent years.

The goal of this study is to investigate the role of social factors on speech learning, including production and perception, in infants ranging in age from ~7-18 months. Infants have either typical hearing or sensorineural hearing loss. The main prediction of the study is that social reinforcement will engender improvements in vocal learning above and beyond gains in hearing in infants with hearing loss. As part of this study: The parent and infant engage in a free play session in the playroom while the investigator cues the parent to say simple nonsense words; Infants hear playback of the same words during a second phase.

The investigators balance and balance related problems and exercise programs should be handled multi-dimensionally. In this study, the investigators' aim is to investigate the effect of dual task-oriented education with stroboscopic glasses on balance, functional mobility and general walking parameters in children with hearing impairment, despite conventional balance exercises. The study will be started when the consent form which prepared in accordance with the ethical committee conditions, explained and approved to all participants and their families. Participants aged 7-12 years, who have not undergone cochlear implant surgery, who can walk independently, have a hearing threshold of 75 decibels (dB) and above, and are diagnosed with congenital bilateral sensorineural hearing impairment will be included in the study. Hearing impaired children who have physical, visual impairment, lack of cooperation for the application and have any neurological problems (other than sensorineural hearing loss) or orthopedic problems that may affect their balance will not be included. Children who meet the inclusion criteria will be divided into three groups by block randomization method; as control (Group 1), conventional exercise balance (Group 2), dual task-oriented stroboscopic visual training group (Group 3) and a healthy control group (Group 4) without any disability will form the fourth group. Only assessments and scales will be applied to the participants in Group 1 and Group 4 at the beginning of the study and at the end of 12 weeks. Group 2 and Group 3 will be included in the exercise program twice a week for 40 minutes for 12 weeks. Conventional balance exercises are planned to be done in groups, and other trainings are planned with one-on-one therapist. Before starting exercise training, demographic characteristics such as dB values (specified in the health reports of), age (years), height (cm), body weight (kg) of the children included in the study will be recorded. At the beginning of the exercise training and at the end of the 12-week training; balance, functional mobility and gait, fall history and fear of falling, quality of life, hand-eye coordination will be evaluated. This study is important in terms of being an example for researches to be carried out for the hearing impaired or other disability groups and contributing to the exercise programs of the trainers working in this field.