The long-term goal of my research is to understand how the auditory system and brain process sound in noisy backgrounds to achieve robust speech understanding. My current projects center on the hypothesis that efferent feedback automatically calibrates the auditory system to the ever-changing acoustic soundscape. This hypothesis predicts that individuals with cochlear hearing impairment suffer from an inability to adapt to new acoustic environments, since loss of outer hair cell (OHC) function is expected to negatively influence an important efferent subsystem called the medial olivocochlear (MOC) reflex. Despite physiological evidence linking MOC activity to improved signal-to-noise ratios, behavioral studies in humans have yet to provide compelling results to support this claim. This lack of evidence provides the impetus for my recent research interests and activities.
My teaching philosophy is summarized in three statements: 1) be a chef, not a cook!, 2) understand the graphs, and 3) rise to the challenge.
Be a chef, not a cook!: I found the major difference between student "chefs" and "cooks" is the ability to master concepts rather than master facts. I teach concepts in hearing science by packaging them into a model or framework. I introduce and develop these models through examples, figures, drawings, formulas, and succinct summary statements.
Understand the graphs: Data is at the heart of the concepts and models in hearing science. Analyzing a graph is an essential skill for learning new ideas and refining the models and frameworks that drive research.
Rise to the challenge: I believe the rigor and quality of education is substantially increased when instructors facilitate in-depth learning and "raise the bar" on academic performance in these areas. My experience is that students will rise to the instructor's expectations if the appropriate support structure is in place. I challenge students with advanced topics in acoustic impedance, signals and systems, Fourier analysis, cochlear physiology, models of the auditory periphery, and psychophysical models of auditory perception. I support students with these challenges by carefully designing assignments, being responsive to email and face-to-face communication, and facilitating interaction with other research assistants. Students in my lab benefit from mentoring activities such as guided literature reviews, impromptu whiteboard discussions, mini-teaching/discussion sessions during lab meetings, and brainstorming sessions about research and how to improve the lab where students are full and valued participants.