Döppler Juan F, Bush Alan, Goller Franz, Mindlin Gabriel B
Department of Physics, FCEyN, University of Buenos Aires, and IFIBA, CONICET, Pabellón 1, Ciudad Universitaria, 1428, Buenos Aires, Argentina.
Department of Biology, University of Utah, 257 South 1400 East, Salt Lake City, UT, 84112, USA.
J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2018 Feb;204(2):209-217. doi: 10.1007/s00359-017-1231-3. Epub 2017 Nov 23.
Behavior emerges from the interaction between the nervous system and peripheral devices. In the case of birdsong production, a delicate and fast control of several muscles is required to control the configuration of the syrinx (the avian vocal organ) and the respiratory system. In particular, the syringealis ventralis muscle is involved in the control of the tension of the vibrating labia and thus affects the frequency modulation of the sound. Nevertheless, the translation of the instructions (which are electrical in nature) into acoustical features is complex and involves nonlinear, dynamical processes. In this work, we present a model of the dynamics of the syringealis ventralis muscle and the labia, which allows calculating the frequency of the generated sound, using as input the electrical activity recorded in the muscle. In addition, the model provides a framework to interpret inter-syllabic activity and hints at the importance of the biomechanical dynamics in determining behavior.
行为源于神经系统与外周装置之间的相互作用。就鸟鸣产生而言，需要对几块肌肉进行精细且快速的控制，以控制鸣管（鸟类发声器官）和呼吸系统的形态。特别是，腹侧鸣管肌参与控制振动唇的张力，从而影响声音的频率调制。然而，将（本质上是电信号的）指令转化为声学特征是复杂的，涉及非线性动态过程。在这项工作中，我们提出了一个腹侧鸣管肌和唇的动力学模型，该模型可以将记录在肌肉中的电活动作为输入来计算所产生声音的频率。此外，该模型提供了一个框架来解释音节间的活动，并暗示了生物力学动力学在决定行为方面的重要性。
