{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T17:07:27Z","timestamp":1782925647029,"version":"3.54.5"},"reference-count":39,"publisher":"Acoustical Society of America (ASA)","issue":"2","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2001,2,1]]},"abstract":"<jats:p>The relationship between hearing loss, detected by measuring the audiometric threshold shift, and the presence of long-lasting otoacoustic emissions, has been studied in a population of 66 adult males, by analyzing the cochlear response in the 80 ms following the subministration of a click stimulus. Most long-lasting OAEs are also recognizable as Synchronized Spontaneous OAEs (SSOAEs). The OAE characteristic decay times were evaluated according to the model by Sisto and Moleti [J. Acoust. Soc. Am. 106, 1893 (1999)]. The starting hypothesis, confirmed by the results, is that long decay time and large equilibrium amplitude are both manifestations of the effectiveness of the active feedback mechanism. The prevalence and frequency distribution of long-lasting OAEs, and of their SSOAE subset, have been separately analyzed for normal and impaired ears. No long-lasting OAE was found within the hearing loss frequency range, but several were found in impaired ears outside the hearing loss range, both at lower and higher frequencies. This result suggests that the correlation between the presence of long-lasting OAEs and good cochlear functionality be local in the frequency domain. The monitor of the OAE decay time is proposed as a new possible method for early detecting hearing loss in populations exposed to noise.<\/jats:p>","DOI":"10.1121\/1.1336502","type":"journal-article","created":{"date-parts":[[2002,7,26]],"date-time":"2002-07-26T14:21:16Z","timestamp":1027693276000},"page":"638-647","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":42,"title":["Spontaneous otoacoustic emissions and relaxation dynamics of long decay time OAEs in audiometrically normal and impaired subjects"],"prefix":"10.1121","volume":"109","author":[{"given":"R.","family":"Sisto","sequence":"first","affiliation":[{"name":"Dipartimento Igiene del Lavoro, ISPESL, Via Fontana Candida, 1, 00040\u2009Monte Porzio Catone (Roma), Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Moleti","sequence":"additional","affiliation":[{"name":"Dipartimento di Fisica, Universit\u00e0 di Roma \u201cTor Vergata,\u201d Via della Ricerca Scientifica, 1, 00133\u2009Roma, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Lucertini","sequence":"additional","affiliation":[{"name":"Italian Air Force\u2014CVS Aerospace Medicine Department, Pratica di Mare AFB, 00040\u2009Pomezia (Roma), Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023070923023855800_arn","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1001\/archotol.125.2.215","article-title":"High-frequency hearing influences lower-frequency distortion-product otoacoustic emissions","volume":"125","year":"1999","journal-title":"Arch. 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