Original Article: PDF OnlyThe Effects of Reversing the Polarity of Frequency-Limited Single-Cycle Stimuli on the Human Auditory Brain Stem ResponseOrlando, Mark S.; Folsom, Richard C.Author Information University of Rochester Medical Center (M.S.D.), Rochester, New York and University of Washington (R.C.F.) Seattle, Washington Address correspondence to: Mark S. Orlando, Ph.D., University of Rochester Medical Center, Audiology Department, Box 629, 601 Elmwood Ave., Rochester, NY 14642. Received June 23, 1994; accepted October 17, 1994. Ear and Hearing: June 1995 - Volume 16 - Issue 3 - p 311-320 Buy Abstract This study was conducted to investigate morphologic differences in the ABR as a result of reversing the stimulus polarity of frequency-limited single-cycle stimuli in normal-hearing subjects. The results clearly demonstrate that large latency differences occur between condensation and rarefaction stimuli for low-frequency stimuli. It is believed that polarity-specific latencies are a result of the highly phase-sensitive neural elements tuned to low-frequency stimuli. In the majority of test subjects the rarefaction stimulus produced shorter absolute wave latencies; however, in a small number of subjects, significantly shorter latencies were elicited with the condensation stimulus. It is believed that differences may occur from varying summation patterns of inner hair cell depolarization between subjects which would be consistent over time within the same subject. © Williams & Wilkins 1995. All Rights Reserved.