{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T12:08:42Z","timestamp":1761998922311,"version":"build-2065373602"},"reference-count":35,"publisher":"Acoustical Society of America (ASA)","issue":"2","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2017,8,1]]},"abstract":"<jats:p>Previous studies have demonstrated that increasing-frequency chirp stimuli (up-chirps) can enhance human auditory brainstem response (ABR) amplitudes by compensating for temporal dispersion occurring along the cochlear partition. In this study, ABRs were measured in two bottlenose dolphins (Tursiops truncatus) in response to spectrally white clicks, up-chirps, and decreasing-frequency chirps (down-chirps). Chirp durations varied from 125 to 2000\u2009\u03bcs. For all stimuli, frequency bandwidth was constant (10\u2013180\u2009kHz) and peak-equivalent sound pressure levels (peSPLs) were 115, 125, and 135\u2009dB re 1\u2009\u03bcPa. Up-chirps with durations less than \u223c1000\u2009\u03bcs generally increased ABR peak amplitudes compared to clicks with the same peSPL or energy flux spectral density level, while down-chirps with durations from above \u223c250 to 500\u2009\u03bcs decreased ABR amplitudes relative to clicks. The findings generally mirror those from human studies and suggest that the use of chirp stimuli may be an effective way to enhance broadband ABR amplitudes in larger marine mammals.<\/jats:p>","DOI":"10.1121\/1.4996721","type":"journal-article","created":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T15:01:18Z","timestamp":1502204478000},"page":"708-717","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":10,"title":["Bottlenose dolphin (<i>Tursiops truncatus<\/i>) auditory brainstem responses to frequency-modulated \u201cchirp\u201d stimuli"],"prefix":"10.1121","volume":"142","author":[{"given":"James J.","family":"Finneran","sequence":"first","affiliation":[{"name":"U.S. Navy Marine Mammal Program, Space and Naval Warfare Systems Center Pacific Code 71510 , 53560 Hull Street, San Diego, California 92152, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jason","family":"Mulsow","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation , 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 , 2240 Shelter Island Drive #200, San Diego, California 92106, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dorian S.","family":"Houser","sequence":"additional","affiliation":[{"name":"National Marine Mammal Foundation , 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 , 626 Kimball Tower, Buffalo, New York 14214, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2017,8,8]]},"reference":[{"key":"2023071806142914500_c1","doi-asserted-by":"publisher","first-page":"662","DOI":"10.1121\/1.396161","article-title":"Detection of complex echoes in noise by an echolocating dolphin","volume":"83","year":"1988","journal-title":"J. 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