Current Work:

Temporal Characteristics of Otoacoustic Emissions

Current projects are concerned with mapping the interaction region of simple and complex sounds in the cochlea using otoacoustic emissions.

Optimizing Measurement Parameters of the Wideband Middle-Ear Muscle Reflex in Humans

As wideband (WB) measures of the middle-ear muscle reflex (MEMR) gain ubiquity in research and clinical practice, optimizing measurement parameters remains an important area of investigation. This project seeks to improve the sensitivity of these measures in detecting sub-clinical auditory damage.

The figure to the left is an example of a WB MEMR in a single subject with normal hearing sensitivity, where relative ear canal sound pressure level changes (RPdiff) are plotted from 0.25-10 kHz by elicitor intensity (see legend, indicating broadband elicitor level in dB A).

Funding:

Innovations in Monitoring Ototoxic Changes using DPOAEs
Dhar, S. & Siegel, J. H.
American Hearing Research Foundation
1/1/13 → 6/30/17

Relating Physiological and Perceptual Measures of Frequency Selectivity
Souza, P. E. & Siegel, J. H.
American Academy of Audiology
7/1/11 → 6/30/13

Peripheral Mechanisms of Hearing
Ruggero, M. A. & Siegel, J. H.
National Institute on Deafness and Other Communication Disorders
4/1/10 → 3/31/16

Reformulating Hearing Assessment: Translating Recent Discoveries Through a Large-scale Study in the Audiology Clinic
Dhar, S., Siegel, J. H. & Zecker, S. G.
National Institute on Deafness and Other Communication Disorders
6/1/07 → 5/31/13

Peripheral Mechanisms of Hearing
Ruggero, M. A., Richter, C. & Siegel, J. H.
National Institute on Deafness and Other Communication Disorders
12/1/02 → 11/30/08