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The mechanisms underlying this onset response have been thoroughly studied in mammals. In contrast, the ABR evoked by sound offset has received relatively little attention. To build upon previous observations of the dolphin offset ABR, a series of experiments was conducted to (1) determine the cochlear places responsible for response generation and (2) examine differences in response morphologies when using toneburst versus noiseburst stimuli. Measurements were conducted with seven bottlenose dolphins (Tursiops truncatus) using tonebursts and spectrally \u201cpink\u201d broadband noisebursts, with highpass noise used to limit the cochlear regions involved in response generation. Results for normal-hearing and hearing-impaired dolphins suggest that the offset ABR contains contributions from at least two distinct responses. One type of response (across place) might arise from the activation of neural units that are shifted basally relative to stimulus frequency and shares commonalities with the onset ABR. A second type of response (within place) appears to represent a \u201ctrue\u201d offset response from afferent centers further up the ascending auditory pathway from the auditory nerve, and likely results from synchronous activity beginning at or above the cochlear nucleus.<\/jats:p>","DOI":"10.1121\/10.0004830","type":"journal-article","created":{"date-parts":[[2021,5,11]],"date-time":"2021-05-11T12:52:44Z","timestamp":1620737564000},"page":"3163-3173","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["The offset auditory brainstem response in bottlenose dolphins (<i>Tursiops truncatus<\/i>): Evidence for multiple underlying processes"],"prefix":"10.1121","volume":"149","author":[{"given":"Jason","family":"Mulsow","sequence":"first","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Drive #200, San Diego, California 92106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James J.","family":"Finneran","sequence":"additional","affiliation":[{"name":"U.S. Navy Marine Mammal Program, Naval Information Warfare Center Pacific Code 56710 2 , 53560 Hull Street, San Diego, California 92152, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0960-8528","authenticated-orcid":false,"given":"Dorian S.","family":"Houser","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Drive #200, San Diego, California 92106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert F.","family":"Burkard","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation Science, University at Buffalo 3 , 626 Kimball Tower, Buffalo, New York 14214, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3795-2083","authenticated-orcid":false,"given":"Madelyn G.","family":"Strahan","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Drive #200, San Diego, California 92106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryan","family":"Jones","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation 1 , 2240 Shelter Island Drive #200, San Diego, California 92106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2021,5,11]]},"reference":[{"volume-title":"Procedures for Determining Audiograms in Toothed Whales through Evoked Potential Methods","year":"2018","author":"ANSI","key":"2023071702455683500_c1a"},{"volume-title":"The Sonar of Dolphins","year":"1993","key":"2023071702455683500_c1"},{"key":"2023071702455683500_c2","doi-asserted-by":"publisher","first-page":"27","DOI":"10.3109\/01050397909076298","article-title":"Human auditory on- and off-potentials of the brainstem: Influence of stimulus envelope characteristics","volume":"8","year":"1979","journal-title":"Scand. 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