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アイテムタイプ Paper/Presentation
DOI
オリジナルDOI
10.1007/s00249-006-0059-5
言語
English
PubMedID
16612585
タイトル
A generalization of the van-der-Pol oscillator underlies active signal amplification in Drosophila hearing.
キーワードリスト
概要
The antennal hearing organs of the fruit fly Drosophila melanogaster boost their sensitivity by an active mechanical process that, analogous to the cochlear amplifier of vertebrates, resides in the motility of mechanosensory cells. This process nonlinearly improves the sensitivity of hearing and occasionally gives rise to self-sustained oscillations in the absence of sound. Time series analysis of self-sustained oscillations now unveils that the underlying dynamical system is well described by a generalization of the van-der-Pol oscillator. From the dynamic equations, the underlying amplification dynamics can explicitly be derived. According to the model, oscillations emerge from a combination of negative damping, which reflects active amplification, and a nonlinear restoring force that dictates the amplitude of the oscillations. Hence, active amplification in fly hearing seems to rely on the negative damping mechanism initially proposed for the cochlear amplifier of vertebrates.
最終更新日
Mar 18, 2018 15:21:35
登録日
Mar 18, 2018 15:21:35
登録者
shu
更新履歴
Mar 18, 2018    Modified; インデックス.
著者
Stoop R , Kern A , Gopfert MC , Smirnov DA , Dikanev TV , Bezrucko BP
ジャーナル名
Eur Biophys J
会議
出版年
2006
35
ページ
511-6
インデックス
/ Public / Paper / Reference Papers
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https://invbrain.neuroinf.jp/modules/PubMedPDF/paper_desc.php?id=1209