A5069263038- Noise Effects and Management
- Hearing Loss and Rehabilitation
- Musculoskeletal pain and rehabilitation
- Injury Epidemiology and Prevention
- Balance, Gait, and Falls Prevention
- Hearing, Cochlea, Tinnitus, Genetics
- Traumatic Brain Injury and Neurovascular Disturbances
- Traumatic Brain Injury Research
- Occupational Health and Performance
- Human-Automation Interaction and Safety
- Older Adults Driving Studies
- Acoustic Wave Phenomena Research
- Material Science and Thermodynamics
- Ergonomics and Musculoskeletal Disorders
- Combustion and Detonation Processes
- Methane Hydrates and Related Phenomena
- Aerodynamics and Fluid Dynamics Research
- Disaster Response and Management
- Speech and Audio Processing
- Phonetics and Phonology Research
- Effects of Vibration on Health
- Aerospace and Aviation Technology
Naval Submarine Medical Research Laboratory
2020-2023
United States Army Aeromedical Research Lab
2016-2019
Gallaudet University
2011
National and international regulatory consensus standards setting bodies have previously proposed derating hearing protector ratings to provide a better match between determined in laboratory the real-world measurements of attenuation for workers. The Institute Occupational Safety Health has scheme that depends upon type protector. This paper examines four studies where personal (PARs) were measured at least twice, before after an intervention earplug fitting techniques. Results from these...
Objective The purpose of this fit-testing study in the field was to systematically compare three Hearing Protection Device (HPD) fit-training methods and determine whether they differ acquisition HPD fitting skill resulting amount earplug attenuation.Design Subjects were randomly assigned receive using one training methods: current, experiential (eHPD), integrated. Personal Attenuation Ratings (PARs) acquired via used verify attenuations pre- post-training.Study Sample US Marine recruits (n...
Abstract Introduction One challenge clinicians face is determining when a military Service Member (SM) can return to duty after an injury that affects the postural control. The gold standard measure control Sensory Organization Test (SOT). This test measures amount of sway present in individual’s static stance may be used examine range function and monitor recovery from injury. Normative values currently available were developed using sample clinically normal adults general population (i.e.,...
To investigate the change in hearing and perceived comfort over 1 year related to using an active protection device (HPD) among United States Marine Corps (USMC) personnel routinely exposed hazardous noise.USMC Weapons Instructors (n = 127) were issued earmuff that met military standards was compatible with other protective equipment. These participants completed pre- post-hearing tests surveys. A control cohort 94) also included compare individual changes high-frequency pure tone average...
Relative loudness of speech feedback during production was investigated using an adaptive, two-track, two interval forced choice procedure. The participants indicated which the signals, (listening while speaking interval) or its audio recording only interval), sounded louder. Based on subject’s choice, gain [indeabel sound pressure level (SPL) raised lowered subsequent trial. defined as difference in each signal (feedback and replay), when were experienced equally loud. recorded with a...
ABSTRACTHearing protection device (HPD) fit-testing is a recommended best practice for hearing conservation programs as it yields metric of the amount attenuation an individual achieves with HPD. This metric, personal rating (PAR), provides health care, safety, and occupational personnel data needed to select optimal environment in which HPD will be worn. Although commercial-off-the-shelf equipment allows professional complete fit tests field, standard test methodology does not exist across...
Shortly after the U.S. Environmental Protection Agency (EPA) promulgated regulation that required labeling of all hearing protection devices (HPDs) with Noise Reduction Rating (NRR), studies were undertaken to examine methods could be used estimate workers' noise exposures. The NRR was shown overestimate attenuation workers likely achieve in everyday environments. While various approaches derate rating have been recommended and by institutions national bodies, derating fails accurately...
Aviation mishaps resulting from degraded visual environments (DVEs) represent a significant loss in military personnel and aircraft every year. DVEs are considered any type of environmental condition (e.g., sand, snow, or fog) that visually obstructs the pilot can cause spatial disorientation. The current study represents tri-service effort exploring implementation audio cueing techniques to aid navigation DVEs. Directional (i.e., indicating location target waypoints) was achieved by...