Cherry (1953) and Cherry and Taylor (1954) reported that a message fed alternately to the two ears can become unintelligible at certain switching rates even though all the speech is physically present at either one ear or the other. Particularly interesting was the reported relation between "recognition time," switching rate and intelligibility. Cherry and Taylor state that there is a time interval, τ, which has the nature of a "dead time constant" during which nothing of the signal is perceived at either ear. Minimum intelligibility occurred for them at a switching rate of three per second, consequently τ is calculated to be about 1/6 of a second.
Proceedings of the Iowa Academy of Science
©1955 Iowa Academy of Science, Inc.
Parker, Charles D. and Schubert, Earl D.
"A Re-Evaluation of the Auditory "Dead Time Constant","
Proceedings of the Iowa Academy of Science, 62(1), 433-437.
Available at: https://scholarworks.uni.edu/pias/vol62/iss1/50