{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T18:48:04Z","timestamp":1775760484927,"version":"3.50.1"},"reference-count":34,"publisher":"Acoustical Society of America (ASA)","issue":"4","funder":[{"DOI":"10.13039\/100010665","name":"H2020 Marie Sk\u00c5\u2009odowska-Curie Actions","doi-asserted-by":"publisher","award":["829208"],"award-info":[{"award-number":["829208"]}],"id":[{"id":"10.13039\/100010665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000781","name":"European Research Council","doi-asserted-by":"publisher","award":["ERCCoG-2017-773067"],"award-info":[{"award-number":["ERCCoG-2017-773067"]}],"id":[{"id":"10.13039\/501100000781","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2020,10,1]]},"abstract":"<jats:p>Katydids (bush-crickets) are endowed with tympanal ears located in their forelegs' tibiae. The tympana are backed by an air-filled tube, the acoustic trachea, which transfers the sound stimulus from a spiracular opening on the thorax to the internal side of the tympanic membranes (TM). In katydids the sound stimulus reaches both the external and internal side of the membranes, and the tympanal vibrations are then transferred to the hearing organ crista acustica (CA) that contains the fluid-immersed mechanoreceptors. Hence the tympana are principally involved in transmitting and converting airborne sound into fluid vibrations that stimulate the auditory sensilla. Consequently, what is the transmission power to the CA? Are the TM tuned to a certain frequency? To investigate this, the surface normal acoustic impedance of the TM is calculated using finite-element analysis in the katydid Copiphora gorgonensis. From this, the reflectance and transmittance are obtained at the TM. Based on the impedance results obtained from the pressure recordings at TM and the velocity field calculations in the AT, in the frequency range 5\u201340 kHz, it is concluded that the tympana have considerably higher transmission around 23 kHz, corresponding to the dominant frequency of the male pure-tone calling song in this species.<\/jats:p>","DOI":"10.1121\/10.0002119","type":"journal-article","created":{"date-parts":[[2020,10,12]],"date-time":"2020-10-12T12:54:24Z","timestamp":1602507264000},"page":"1952-1960","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":11,"title":["On the tympanic membrane impedance of the katydid <i>Copiphora gorgonensis<\/i> (Insecta: Orthoptera: Tettigoniidae)"],"prefix":"10.1121","volume":"148","author":[{"given":"Emine","family":"Celiker","sequence":"first","affiliation":[{"name":"School of Life Sciences, University of Lincoln, Joseph Banks Laboratories 1 , Green Lane, Lincoln, LN6 7DL, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thorin","family":"Jonsson","sequence":"additional","affiliation":[{"name":"Institute of Biology, Universit\u00e4tsplatz 2, Karl-Franzens-University Graz 2 , 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"Montealegre-Z","sequence":"additional","affiliation":[{"name":"School of Life Sciences, University of Lincoln, Joseph Banks Laboratories 1 , Green Lane, Lincoln, LN6 7DL, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2020,10,12]]},"reference":[{"issue":"4","key":"2023080508411010700_c1","doi-asserted-by":"publisher","first-page":"1977","DOI":"10.1121\/1.427945","article-title":"Methods for estimating the sound pressure at the eardrum","volume":"106","year":"1999","journal-title":"J. Acoust. Soc. Am."},{"key":"2023080508411010700_c2","first-page":"44","article-title":"Measurement of eardrum acoustic impedance","volume-title":"Peripheral Auditory Mechanisms","year":"1986"},{"issue":"6109","key":"2023080508411010700_c3","doi-asserted-by":"publisher","first-page":"968","DOI":"10.1126\/science.1225271","article-title":"Convergent evolution between insect and mammalian audition","volume":"338","year":"2012","journal-title":"Science"},{"key":"2023080508411010700_c4","first-page":"19","volume-title":"An Introduction to Acoustics.","year":"2004"},{"key":"2023080508411010700_c5","volume-title":"Fundamentals of Acoustics","year":"1999","edition":"4th ed"},{"issue":"1","key":"2023080508411010700_c6","doi-asserted-by":"publisher","first-page":"242","DOI":"10.1121\/1.388855","article-title":"Measurement of the eardrum impedance of human ears","volume":"73","year":"1983","journal-title":"J. Acoust. Soc. Am."},{"issue":"1","key":"2023080508411010700_c7","doi-asserted-by":"publisher","first-page":"372","DOI":"10.1121\/1.408329","article-title":"Measurement of acoustic impedance and reflectance in the human ear canal","volume":"95","year":"1994","journal-title":"J. Acoust. Soc. Am."},{"issue":"1","key":"2023080508411010700_c8","doi-asserted-by":"publisher","first-page":"24","DOI":"10.1121\/1.388857","article-title":"Estimation of the area function of human ear canals by sound pressure measurements","volume":"73","year":"1983","journal-title":"J. Acoust. Soc. Am."},{"issue":"4","key":"2023080508411010700_c9","doi-asserted-by":"publisher","first-page":"315","DOI":"10.1044\/jshr.0604.315","article-title":"Impedance measurements at the eardrum as an aid to diagnosis","volume":"6","year":"1963","journal-title":"J. Speech Hear. Res."},{"issue":"4","key":"2023080508411010700_c10","doi-asserted-by":"publisher","first-page":"2154","DOI":"10.1121\/1.2769625","article-title":"Sound pressure distribution and power flow within the gerbil ear canal from 100 Hz to 80 kHz","volume":"122","year":"2007","journal-title":"J. Acoust. Soc. Am."},{"issue":"6","key":"2023080508411010700_c11","doi-asserted-by":"publisher","first-page":"3481","DOI":"10.1121\/1.405678","article-title":"Acoustic transmission characteristics of the tympanal tracheae of bushcrickets (Tettigoniidae). II: Comparative studies of the tracheae of seven species","volume":"93","year":"1993","journal-title":"J. Acoust. Soc. Am."},{"issue":"3","key":"2023080508411010700_c12","doi-asserted-by":"publisher","first-page":"1211","DOI":"10.1121\/1.408174","article-title":"A peripheral mechanism for auditory directionality in the bushcricket Gampsocleis gratiosa: Acoustic tracheal system","volume":"94","year":"1993","journal-title":"J. Acoust. Soc. Am."},{"issue":"3","key":"2023080508411010700_c13","doi-asserted-by":"publisher","first-page":"297","DOI":"10.1007\/BF00611165","article-title":"Mechanical time resolution in some insect ears","volume":"143","year":"1981","journal-title":"J. Compar. Physiol."},{"issue":"4","key":"2023080508411010700_c14","doi-asserted-by":"publisher","first-page":"1845","DOI":"10.1121\/1.413371","article-title":"The acoustic trachea of tettigoniids as an exponential horn: Theoretical calculations and bioacoustical measurements","volume":"98","year":"1995","journal-title":"J. Acoust. Soc. Am."},{"issue":"2","key":"2023080508411010700_c15","doi-asserted-by":"publisher","first-page":"145","DOI":"10.1007\/BF00215110","article-title":"A new biophysical method to determine the gain of the acoustic trachea in bushcrickets","volume":"175","year":"1994","journal-title":"J. Compar. Physiol. A"},{"key":"2023080508411010700_c16","volume-title":"Acoustic Behaviour of Insects: An Evolutionary Perspective.","year":"1991"},{"key":"2023080508411010700_c17","first-page":"45","article-title":"The auditory\u2013vibratory sensory system in bushcrickets","volume-title":"Insect Sounds and Communication","year":"2005"},{"issue":"3","key":"2023080508411010700_c18","doi-asserted-by":"crossref","first-page":"821","DOI":"10.1242\/jeb.60.3.821","article-title":"The physiology of the Tettigoniid ear: I. The implications of the anatomy of the ear to its function in sound reception","volume":"60","year":"1974","journal-title":"J. Exper. Biol."},{"issue":"2","key":"2023080508411010700_c19","doi-asserted-by":"publisher","first-page":"169","DOI":"10.1007\/BF00605735","article-title":"Auditory function in Tettigoniidae (Orthoptera: Ensifera)","volume":"142","year":"1981","journal-title":"J. Compar. Physiol."},{"issue":"2","key":"2023080508411010700_c20","doi-asserted-by":"publisher","first-page":"155","DOI":"10.1002\/jez.1402700205","article-title":"Complex tibial organs in the forelegs, midlegs, and hindlegs of the bushcricket Gampsocleis gratiosa (Tettigoniidae): Comparison of the physiology of the organs","volume":"270","year":"1994","journal-title":"J. Exper. Zool."},{"issue":"1","key":"2023080508411010700_c21","doi-asserted-by":"publisher","first-page":"73","DOI":"10.1111\/j.1365-3032.1992.tb00992.x","article-title":"Morphological and physiological differences of the auditory system in three related bushcrickets (Orthoptera: Phaneropteridae, Poecilimon)","volume":"17","year":"1992","journal-title":"Physiol. Entomol."},{"issue":"122","key":"2023080508411010700_c22","doi-asserted-by":"publisher","first-page":"20160560","DOI":"10.1098\/rsif.2016.0560","article-title":"Auditory mechanics in a bush-cricket: Direct evidence of dual sound inputs in the pressure difference receiver","volume":"13","year":"2016","journal-title":"J. R. Soc. Interface"},{"issue":"1","key":"2023080508411010700_c23","doi-asserted-by":"publisher","first-page":"25","DOI":"10.1007\/BF00623929","article-title":"Physical and physiological properties of the Tettigoniid (\u201cgrasshopper\u201d) ear","volume":"100","year":"1975","journal-title":"J. Compar. Physiol."},{"issue":"1","key":"2023080508411010700_c24","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1242\/jeb.116.1.493","article-title":"Short communication: The role of the tympanal membranes in the tuning of auditory receptors in Tettigoniidae (Orthoptera: Ensifera)","volume":"116","year":"1985","journal-title":"J. Exper. Biol."},{"issue":"4","key":"2023080508411010700_c25","doi-asserted-by":"publisher","first-page":"461","DOI":"10.1007\/BF00612011","article-title":"Tonotopic organisation of auditory receptors in Tettigoniidae (Orthoptera: Ensifera)","volume":"147","year":"1982","journal-title":"J. Compar. Physiol."},{"issue":"5","key":"2023080508411010700_c26","doi-asserted-by":"publisher","first-page":"315","DOI":"10.1002\/(SICI)1097-010X(19961201)276:5&lt;315::AID-JEZ2&gt;3.0.CO;2-R","article-title":"The auditory\u2013vibratory sensory system of the bushcricket Polysarcus denticauda (Phaneropterinae, Tettigoniidae) II. Physiology of receptor cells","volume":"276","year":"1996","journal-title":"J. Exper. Zool."},{"issue":"1","key":"2023080508411010700_c27","doi-asserted-by":"publisher","first-page":"39","DOI":"10.1007\/BF00574913","article-title":"Functional morphology of bushcricket ears: Comparison between two species belonging to the Phaneropterinae and Decticinae (Insecta, Ensifera","volume":"114","year":"1994","journal-title":"Zoomorph."},{"issue":"12","key":"2023080508411010700_c28","doi-asserted-by":"publisher","first-page":"939","DOI":"10.1007\/s00359-010-0577-6","article-title":"Acoustic-induced motion of the bushcricket (Mecopoda elongata, Tettigoniidae) tympanum","volume":"196","year":"2010","journal-title":"J. Compar. Physiol. A"},{"issue":"2","key":"2023080508411010700_c29","doi-asserted-by":"publisher","first-page":"464","DOI":"10.1016\/j.bpj.2019.11.3394","article-title":"The auditory mechanics of the outer ear of the bush cricket: A numerical approach","volume":"118","year":"2020","journal-title":"Biophys. J."},{"issue":"6","key":"2023080508411010700_c30","doi-asserted-by":"publisher","first-page":"3784","DOI":"10.1121\/1.3125327","article-title":"Ensemble averaged surface normal impedance of material using an in-situ technique: Preliminary study using boundary element method","volume":"125","year":"2009","journal-title":"J. Acoust. Soc. Am."},{"issue":"3","key":"2023080508411010700_c31","doi-asserted-by":"publisher","first-page":"187","DOI":"10.1016\/j.asd.2004.05.006","article-title":"Design and mechanical properties of insect cuticle","volume":"33","year":"2004","journal-title":"Arthropod Struc. and Dev."},{"issue":"1","key":"2023080508411010700_c32","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/S0045-7949(99)00214-X","article-title":"An evaluation of the MITC shell elements","volume":"75","year":"2000","journal-title":"Comput Struc."},{"key":"2023080508411010700_c33","volume-title":"The Mathematical Theory of Finite Element Methods","year":"2015"},{"key":"2023080508411010700_c34","unstructured":"COMSOL Multiphysics\u00ae v. 5.4.\u2008www.comsol.com. COMSOL AB, Stockholm, Sweden."}],"container-title":["The Journal of the Acoustical Society of America"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.aip.org\/asa\/jasa\/article-pdf\/148\/4\/1952\/15344570\/1952_1_online.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.aip.org\/asa\/jasa\/article-pdf\/148\/4\/1952\/15344570\/1952_1_online.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,5]],"date-time":"2023-08-05T08:42:55Z","timestamp":1691224975000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.aip.org\/jasa\/article\/148\/4\/1952\/994003\/On-the-tympanic-membrane-impedance-of-the-katydid"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,10,1]]},"references-count":34,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2020,10,1]]}},"URL":"https:\/\/doi.org\/10.1121\/10.0002119","relation":{},"ISSN":["0001-4966","1520-8524"],"issn-type":[{"value":"0001-4966","type":"print"},{"value":"1520-8524","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2020,10]]},"published":{"date-parts":[[2020,10,1]]}}}