This novel prospective study will involve 120 adult participants (20 years and older) with no previous or current complaint/diagnosis of swallowing problems (dysphagia), as well as no history of any neurologic, otolaryngologic, or gastroenterologic diagnoses potentially causing dysphagia. Each participant will undergo a Modified Barium Swallow Study (MBSS) using the standardized MBSImP™© protocol, which will be digitally recorded for later scoring using the MBSImP™© scoring form and penetration-aspiration scale (PAS). Measurements include 17 physiologic components of swallowing performance, PAS, kinematic (relative distance), termporal (timing) measures of structural movements across 12 swallows of standardized viscosities, and respiratory-swallow coordination patterns during MBSS. Appropriate statistical analyses will be performed and reported.
This project, funded by the National Institutes of Health, is being conducted to determine the effects of aging on hearing, understanding speech, and brain functions. This study will provide a scientific basis for diagnosis, rehabilitation and prevention of hearing loss due to aging. Volunteers who meet the eligibility requirements may enroll in this study, which will include measurements of hearing, making listening judgments of sounds, behavioral tasks, questionnaires, and MRI scanning of the brain. Participants 50 years of age and older with normal hearing or hearing loss are currently being recruited. Three visits of 2-3 hours each are required and scheduling is flexible.