期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 225, 期 5, 页码 -出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jeb.243474
关键词
Acoustic signalling; Respiration monitoring; Thermography; Vocal emission
类别
资金
- Minerva Stiftung and Alexander von Humboldt-Stiftung post-doctoral fellowships
- Internationalization Initiative Start Up funding, University of Konstanz
- Israel Academy of Sciences and Humanities
- Natural Sciences and Engineering Research Council of Canada [RGPIN-05814]
- University of Zurich
- Max Planck Institute
Vocal emission requires coordination with the respiratory system, and monitoring changes in respiration can help identify preparation for vocalization and examine the probability of vocal production. It can also be used to study coordination and avoidance of jamming in vocal interactions.
Vocal emission requires coordination with the respiratory system. Monitoring the increase in laryngeal pressure, which is needed for vocal production, allows detection of transitions from quiet respiration to vocalization-supporting respiration. Characterization of these transitions could be used to identify preparation for vocal emission and to examine the probability of it manifesting into an actual vocal production event. Specifically, overlaying the subject's respiration with conspecific calls can highlight events of call initiation and suppression, as a means of signalling coordination and avoiding jamming. Here, we present a thermal imaging-based methodology for synchronized respiration and vocalization monitoring of free-ranging meerkats. The sensitivity of this methodology is sufficient for detecting transient changes in the subject's respiration associated with the exertion of vocal production. The differences in respiration are apparent not only during the vocal output, but also prior to it, marking the potential time frame of the respiratory preparation for calling. A correlation between conspecific calls with elongation of the focal subject's respiration cycles could be related to fluctuations in attention levels or in the motivation to reply. This framework can be used for examining the capability for enhanced respiration control in animals during modulated and complex vocal sequences, detecting `failed' vocalization attempts and investigating the role of respiration cues in the regulation of vocal interactions.
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