{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T14:48:12Z","timestamp":1792162092287,"version":"4.4.0"},"reference-count":40,"publisher":"Acoustical Society of America (ASA)","issue":"6","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,6,1]]},"abstract":"<jats:p>An auditory study was conducted to derive data on temporary threshold shift (TTS) induced by single impulses. This information should serve as basis for the definition of noise exposure criteria for harbor porpoises. The measurements of TTS were conducted on a harbor porpoise by measuring the auditory evoked potentials in response to amplitude-modulated sounds. After obtaining baseline hearing data the animal was exposed to single airgun stimuli at increasing received levels. Immediately after each exposure the animal\u2019s hearing threshold was tested for significant changes. The received levels of the airgun impulses were increased until TTS was reached. At 4 kHz the predefined TTS criterion was exceeded at a received sound pressure level of 199.7\u2002dBpk-pk\u2002re\u20021\u2002\u03bcPa and a sound exposure level (SEL) of 164.3\u2002dB\u2002re\u20021\u2002\u03bcPa2\u2009s. The animal consistently showed aversive behavioral reactions at received sound pressure levels above 174\u2002dBpk-pk\u2002re\u20021\u2002\u03bcPa or a SEL of 145\u2002dB\u2002re\u20021\u2002\u03bcPa2\u2009s. Elevated levels of baseline hearing sensitivity indicate potentially masked acoustic thresholds. Therefore, the resulting TTS levels should be considered masked temporary threshold shift (MTTS) levels. The MTTS levels are lower than for any other cetacean species tested so far.<\/jats:p>","DOI":"10.1121\/1.3117443","type":"journal-article","created":{"date-parts":[[2009,6,4]],"date-time":"2009-06-04T22:24:29Z","timestamp":1244154269000},"page":"4060-4070","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":192,"title":["Temporary shift in masked hearing thresholds in a harbor porpoise (<i>Phocoena phocoena<\/i>) after exposure to seismic airgun stimuli"],"prefix":"10.1121","volume":"125","author":[{"given":"Klaus","family":"Lucke","sequence":"first","affiliation":[{"name":"Christian-Albrechts-Universit\u00e4t zu Kiel Forschungs- und Technologiezentrum Westk\u00fcste, , 25761 B\u00fcsum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ursula","family":"Siebert","sequence":"additional","affiliation":[{"name":"Christian-Albrechts-Universit\u00e4t zu Kiel Forschungs- und Technologiezentrum Westk\u00fcste, , 25761 B\u00fcsum, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul A.","family":"Lepper","sequence":"additional","affiliation":[{"name":"Loughborough University Department of Electronic and Electrical Engineering, Advanced Signal Processing Group, , Loughborough LE11 3TU, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie-Anne","family":"Blanchet","sequence":"additional","affiliation":[{"name":"Fjord & Baelt , Margrethes Plads 1, 5300 Kerteminde, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023072607281779200_c1","doi-asserted-by":"publisher","first-page":"192","DOI":"10.3109\/00016487409126345","article-title":"Comparison of hearing thresholds and morphological changes in the chinchilla after exposure to 4 kHz tones","volume":"78","year":"1974","journal-title":"Acta Oto-Laryngol."},{"key":"2023072607281779200_c2","doi-asserted-by":"publisher","first-page":"2247","DOI":"10.1121\/1.417934","article-title":"The effect of reverberant blast waves on the auditory system","volume":"100","year":"1996","journal-title":"J. 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