His thesis work on modeling predictive eye movements is still being cited...[1] Upon completing his degree, he accepted a position with Raymond Carhart in Audiology at Northwestern and became a full professor seven years later.
By 1965 he established the Auditory Physiology Laboratory where he and some seventy doctoral students, postdocs and colleagues have produced a body of work that can be characterized in various categories.
This work forms the basis of present-day measurements and understanding of compound electrical responses of the auditory periphery.
[2] [2.2] Discovery of fractional subharmonics in cochlear mechanics, including the first report on chaotic behavior in a biological system, as well as the first demonstration of a form of otoacoustic emissions.
[4] [2.4] First explanation of what determines low-frequency auditory threshold [5] [2.5] Discovery that inner hair cells respond to basilar membrane velocity [6] [2.6] Demonstration that in the absence of outer hair cells there is a significant threshold shift, change in frequency selectivity, and linearization of the cochlea.