ArticlePloS one2011
Adapted to roar: functional morphology of tiger and lion vocal folds.
Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 41 citations in OpenAlex.
- A proposal for epithelial dominance in extremely high fundamental frequency vocalizations.The Journal of the Acoustical Society of America · 2025Article
- Global analysis of acoustic frequency characteristics in birds.Proceedings. Biological sciences · 2024Article
- Videofluoroscopy of the aerodigestive tract inFrontiers in veterinary science · 2024Article
- Behavioral-psychological motivations encoded in the vocal repertoire of captive Amur tiger (Panthera tigris altaica) cubs.BMC zoology · 2022Article
- Selection on vocal output affects laryngeal morphology in rats.Journal of anatomy · 2021Article
- Identity and novelty in the avian syrinx.Proceedings of the National Academy of Sciences of the United States of America · 2018Review
- Investigation of phonatory characteristics using ex vivo rabbit larynges.The Journal of the Acoustical Society of America · 2018Article
- Functional connectivity corresponding to the tonotopic differentiation of the human auditory cortex.Human brain mapping · 2018Article
- A mixed-effects model approach for the statistical analysis of vocal fold viscoelastic shear properties.Journal of the mechanical behavior of biomedical materials · 2017Article
- In situ vocal fold properties and pitch prediction by dynamic actuation of the songbird syrinx.Scientific reports · 2017Article
- How small could a pup sound? The physical bases of signaling body size in harbor seals.Current zoology · 2017Article
- The evolution of acoustic size exaggeration in terrestrial mammals.Nature communications · 2016Article
- Predicting Achievable Fundamental Frequency Ranges in Vocalization Across Species.PLoS computational biology · 2016Article
- Combining multiobjective optimization and cluster analysis to study vocal fold functional morphology.IEEE transactions on bio-medical engineering · 2014Article
- Integrative physiology of fundamental frequency control in birds.Journal of physiology, Paris · 2013Review
- The anisotropic nature of the human vocal fold: an ex vivo study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2013Article
- Visualizing collagen network within human and rhesus monkey vocal folds using polarized light microscopy.The Annals of otology, rhinology, and laryngology · 2013Article
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
Abstract
Vocal production requires active control of the respiratory system, larynx and vocal tract. Vocal sounds in mammals are produced by flow-induced vocal fold oscillation, which requires vocal fold tissue that can sustain the mechanical stress during phonation. Our understanding of the relationship between morphology and vocal function of vocal folds is very limited. Here we tested the hypothesis that vocal fold morphology and viscoelastic properties allow a prediction of fundamental frequency range of sounds that can be produced, and minimal lung pressure necessary to initiate phonation. We tested the hypothesis in lions and tigers who are well-known for producing low frequency and very loud roaring sounds that expose vocal folds to large stresses. In histological sections, we found that the Panthera vocal fold lamina propria consists of a lateral region with adipocytes embedded in a network of collagen and elastin fibers and hyaluronan. There is also a medial region that contains only fibrous proteins and hyaluronan but no fat cells. Young's moduli range between 10 and 2000 kPa for strains up to 60%. Shear moduli ranged between 0.1 and 2 kPa and differed between layers. Biomechanical and morphological data were used to make predictions of fundamental frequency and subglottal pressure ranges. Such predictions agreed well with measurements from natural phonation and phonation of excised larynges, respectively. We assume that fat shapes Panthera vocal folds into an advantageous geometry for phonation and it protects vocal folds. Its primary function is probably not to increase vocal fold mass as suggested previously. The large square-shaped Panthera vocal fold eases phonation onset and thereby extends the dynamic range of the voice.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.