The bushcricket Mecopoda elongata can hear a wide range of frequencies, utilizing less than 50 sensory units. It is known that transduction takes place in the sensory dendrite but the underlying mechanisms are still unexplained. In a recent study we used optical coherence tomography (OCT) to characterize the relative motion in the dorsal-ventral direction between anatomical structures near the transduction site. In the current study, we combined OCT vibrometry with the use of a mirror to measure vibrations of the same structures from two different angles. By developing a method to identify measurement locations across the two viewing angles, we were able to decompose the motion into an anterior-posterior and a dorsal-ventral component. In the structures surrounding the transduction site we observed elliptical sound-induced motion that varied systematically with frequency. The motion in the cap cells (CC) was more tilted towards the anterior-posterior axis than that of the dorsal wall (DW). Finally, the two-dimensional relative motion between the DW and the CC, a candidate for the drive of transduction, was sharply tuned, and for ultrasound it was similar to the neural tuning described in the literature for this species.
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27 February 2024
NONLINEARITY AND HEARING: ADVANCES IN THEORY AND EXPERIMENT: Proceedings of the 14th International Mechanics of Hearing Workshop
24–29 July 2022
Helsingør, Denmark
Research Article|
February 27 2024
Elliptical sound-induced motion in the bushcricket hearing organ
Anna Vavakou;
Anna Vavakou
a)
1
Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam
, 3000 CA, Rotterdam, The Netherlands
a)Corresponding author: a.vavakou@erasmusmc.nl
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Jan Scherberich;
Jan Scherberich
b)
2
Institute for Zoology and Evolutionary Research, Friedrich Schiller University Jena
, 07743 Jena, Germany
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Manuela Nowotny;
Manuela Nowotny
c)
2
Institute for Zoology and Evolutionary Research, Friedrich Schiller University Jena
, 07743 Jena, Germany
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Marcel van der Heijden
Marcel van der Heijden
d)
1
Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam
, 3000 CA, Rotterdam, The Netherlands
2
Institute for Zoology and Evolutionary Research, Friedrich Schiller University Jena
, 07743 Jena, Germany
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AIP Conf. Proc. 3062, 060010 (2024)
Citation
Anna Vavakou, Jan Scherberich, Manuela Nowotny, Marcel van der Heijden; Elliptical sound-induced motion in the bushcricket hearing organ. AIP Conf. Proc. 27 February 2024; 3062 (1): 060010. https://doi.org/10.1063/5.0189475
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