The ECochG procedure repeatedly has reinvented itself over the years. Initially it was mostly used in research. Then, for about ten years from the early 1960s to the early 1970s, ECochG was used for estimating auditory thresholds in infants, young, and difficult-to-test children. With the advent of the auditory brainstem response (ABR) as a clinical procedure in the mid-1970s, ECochG temporarily lost its appeal for pediatric hearing assessment. However, by the early 1980s papers described the value of ECochG in diagnosis of Meniere's disease. A few years later, ECochG was taken to the operating room where it complemented ABR in intra-operative neurophysiological monitoring of patients undergoing surgery and at risk for damage to auditory structures. Most recently, ECochG has proven invaluable in the accurate diagnosis of auditory neuropathy spectrum disorder (ANSD). Read all about the uses of ECochG in my New Handbook of Auditory Evoked Responses. Or, quickly discover the value of ECochG in pediatric assessment, including diagnosis of ANSD, in Objective Assessment of Hearing. You can also view a PPT presentation here describing ECochG, with an emphasis on its use in determining the site of dysfunction in ANSD.