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This necessitates that sound be delivered using a contact transducer either pressed against the skin or affixed to the jaw using a suction cup (i.e., \u201cjawphones\u201d). This study examined how bottlenose dolphin (Tursiops truncatus, n\u2009=\u20093) auditory brainstem responses (ABRs) varied with electrode and jawphone location during aerial testing. Stimuli were tone bursts with center frequencies of 28 to 160\u2009kHz. Regression-based thresholds were lowest with the jawphone on the posterior and middle parts of the mandible. Thresholds based on later ABR peaks\u2014recorded using an electrode immediately behind the blowhole\u2014suggested more similarity between the thresholds for the anterior tip of the rostrum and the posterior\/middle mandible than those based on earlier monaural waves recorded near the meatus. This was likely a result of a summation of responses from both ears as opposed to a more efficient acoustic pathway to the ear. These patterns were independent of frequency. These findings provide guidance for jawphone and electrode locations when examining dolphin hearing and when interpreting relative acoustic sensitivity of the head in similar testing situations.<\/jats:p>","DOI":"10.1121\/10.0001123","type":"journal-article","created":{"date-parts":[[2020,4,23]],"date-time":"2020-04-23T14:33:02Z","timestamp":1587652382000},"page":"2525-2533","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["Auditory brainstem responses during aerial testing with bottlenose dolphins (<i>Tursiops truncatus<\/i>): Effects of electrode and jawphone locations"],"prefix":"10.1121","volume":"147","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 2 , Code 56710, 53560 Hull Street, San Diego, California 92152, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alyssa W.","family":"Accomando","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, State University of New York, University at Buffalo 3 , 626 Kimball Tower, Buffalo, New York 14214, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2020,4,23]]},"reference":[{"key":"2023080809403968300_c1","first-page":"28","article-title":"Procedure for Determining Audiograms in Toothed Whales through Evoked Potential Methods","author":"American National Standards Institute (ANSI)","year":"2018"},{"key":"2023080809403968300_c2","doi-asserted-by":"publisher","first-page":"3305","DOI":"10.1121\/1.1401757","article-title":"Three-dimensional modeling of hearing in Delphinus delphis","volume":"110","year":"2001","journal-title":"J. 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