We are generally interested in hearing, hearing loss, and hearing healthcare. One major focus of our work is in understanding the physiology and biophysics related to sounds created in the inner ear (otoacoustic emissions). We record these sounds using small microphones placed in the ear and attempt to understand the workings of the inner ear by analyzing them in various ways. We are also keenly interested in using these sounds to detect malfunction of the ear at the earliest. A second major focus is on hearing healthcare delivery. Here we are interested in understanding why so few people seek hearing health care. Once we identify barriers to access, we attempt to devise tools and methods to remove these barriers, thereby improving the affordability and accessibility of hearing health care.
Cochlear Mechanics and OAEs
- Dewey, JB, Dhar, S(2017)A common microstructure in behavioral hearing thresholds and stimulus-frequency otoacoustic emissions. J Acoust Soc Am 142 (5):3069.
- Dewey, JB, Dhar, S(2017)Profiles of Stimulus-Frequency Otoacoustic Emissions from 0.5 to 20 kHz in Humans. J Assoc Res Otolaryngol 18 (1):89-110.
- Zhao, W, Dewey, JB, Boothalingam, S, Dhar, S(2015)Efferent Modulation of Stimulus Frequency Otoacoustic Emission Fine Structure. Front Syst Neurosci 9 :168.
- Hunter, LL et al.(2020)Extended high frequency hearing and speech perception implications in adults and children. Hear Res :107922.
- Stiepan, S, Siegel, J, Lee, J, Souza, P, Dhar, SThe Association Between Physiological Noise Levels and Speech Understanding in Noise. Ear Hear 41 (2):461-464.
- Souza, NN, Dhar, S, Neely, ST, Siegel, JH(2014)Comparison of nine methods to estimate ear-canal stimulus levels. J Acoust Soc Am 136 (4):1768-87.
Sumitrajit (Sumit) DharPrincipal Troublemaker
Sumit’s scientific interests include otoacoustic emissions, cochlear mechanics, and hearing health care.
Mary MeskanAssistant Instigator
Mary is an audiologist with clinical and research experience. Her interests include improving access to hearing healthcare.
Jasleen SinghPostdoctoral Fellow
Uzma Shaheen WilsonPhD Candidate
Uzma is a clinically trained audiologist. Her interests are in the mechanisms of otoacoustic emissions and their connection to cochlear mechanics.
Courtney Coburn GlavinPhD Student
Courtney is a clinically trained audiologist. She is interested in using otoacoustic emissions to better understand how the ear changes with age and in response to environmental insults.
Alexandra BrocknerPhD Student
Alexandra is a clinically trained audiologist. Her interests include evaluating the tools used to measure hearing aid use and developing behavior-based interventions for promoting hearing aid use in adults.
48 million (20%) of Americans report some degree of hearing loss