02036nas a2200157   4500008004100000245008500041210006900126260001600195300001200211490000600223520143000229100002401659700002401683700003301707856013801740       2017                        eng d00aNon-invasive biophysical measurement of travelling waves in the insect inner ear0 aNoninvasive biophysical measurement of travelling waves in the i  cJul-18-2017  a170-1710 v43 a<p>Frequency analysis in the mammalian cochlea depends on the propagation of frequency information in the form of a travelling wave (TW) across tonotopically arranged auditory sensilla. TWs have been directly observed in the basilar papilla of birds and the ears of bush-crickets (Insecta: Orthoptera) and have also been indirectly inferred in the hearing organs of some reptiles and frogs. Existing experimental approaches to measure TW function in tetrapods and bush-crickets are inherently invasive, compromising the fine-scale mechanics of each system. Located in the forelegs, the bush-cricket ear exhibits outer, middle and inner components; the inner ear containing tonotopically arranged auditory sensilla within a fluid-filled cavity, and externally protected by the leg cuticle. Here, we report bush-crickets with transparent ear cuticles as potential model species for direct, non-invasive measuring of TWs and tonotopy. Using laser Doppler vibrometry and spectroscopy, we show that increased transmittance of light through the ear cuticle allows for effective non-invasive measurements of TWs and frequency mapping. More transparent cuticles allow several properties of TWs to be precisely recovered and measured in vivo from intact specimens. Our approach provides an innovative, non-invasive alternative to measure the natural motion of the sensilla-bearing surface embedded in the intact inner ear fluid.</p>
1 aSarria-S, Fabio, A.1 aSoulsbury, Carl, D.1 aMontealegre-Zapata, Fernando  uhttp://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.170171https://syndication.highwire.org/content/doi/10.1098/rsos.17017100559nas a2200133   4500008004100000245009200041210006900133260002000202300001100222490000600233100002700239700002100266856013800287       2015                        eng d00aPosition-dependent hearing in three species of bushcrickets (Tettigoniidae, Orthoptera)0 aPositiondependent hearing in three species of bushcrickets Tetti  cOct-26-20152016  a1404730 v21 aLakes-Harlan, Reinhard1 aScherberich, Jan  uhttp://rsos.royalsocietypublishing.org/lookup/doi/10.1098/rsos.140473https://syndication.highwire.org/content/doi/10.1098/rsos.140473