Evidence map›Paper›PMID 33627739›Full record

ArticleScientific reports2021

Occurrences of non-linear phenomena and vocal harshness in dog whines as indicators of stress and ageing.

András Marx, Rita Lenkei, Paula Pérez Fraga, Viktória Bakos, Enikő Kubinyi, Tamás Faragó

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.4field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
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  5. Article
  6. Acoustic estimation of voice roughness.Attention, perception & psychophysics · 2025
    Article
  7. Review
  8. Rough is salient: a conserved vocal niche to hijack the brain's salience system.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  9. Acoustic context and dynamics of nonlinear phenomena in mammalian calls: the case of puppy whines.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  10. Nonlinear vocal phenomena in African penguin begging calls: occurrence, significance and potential applications.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  11. Emotions mediate nonlinear phenomena production in the vocalizations of two ape species.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  12. Singing out of tune: sexual and developmental differences in the occurrence of nonlinear phenomena in primate songs.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  13. Nonlinear phenomena in marmot alarm calls: a mechanism encoding fear?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  14. Article
  15. Article
  16. Crocodile perception of distress in hominid baby cries.Proceedings. Biological sciences · 2023
    Article
  17. Article
  18. Roughness perception: A multisensory/crossmodal perspective.Attention, perception & psychophysics · 2022
    Review
  19. Mechanisms of sound production in deer mice (Peromyscus spp.).The Journal of experimental biology · 2022
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

András MarxDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary.
Rita LenkeiDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary.
Paula Pérez FragaDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary.
Viktória BakosDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary.
Enikő KubinyiDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary.
Tamás FaragóDepartment of Ethology, Eötvös Loránd University, Budapest, Hungary. tamas.farago@ttk.elte.hu.
Eötvös Loránd University · HU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

During social interactions, acoustic parameters of tetrapods' vocalisations reflect the emotional state of the caller. Higher levels of spectral noise and the occurrence of irregularities (non-linear phenomena NLP) might be negative arousal indicators in alarm calls, although less is known about other distress vocalisations. Family dogs experience different levels of stress during separation from their owner and may vocalise extensively. Analysing their whines can provide evidence for the relationship between arousal and NLP. We recorded 167 family dogs' separation behaviour including vocalisations, assessed their stress level based on behaviour and tested how these, their individual features, and owner reported separation-related problems (SRP) relate to their whines' (N = 4086) spectral noise and NLP. Dogs with SRP produced NLP whines more likely. More active dogs and dogs that tried to escape produced noisier whines. Older dogs' whines were more harmonic than younger ones', but they also showed a higher NLP ratio. Our results show that vocal harshness and NLP are associated with arousal in contact calls, and thus might function as stress indicators. The higher occurrence of NLP in older dogs irrespective to separation stress suggests loss in precise neural control of the larynx, and hence can be a potential ageing indicator.

Indexed as

AcousticsAgingAnimalsArousalDogsEmotionsFemaleHuman-Animal BondHumansMaleNoiseVocalization, AnimalVoiceVoice Quality

Identifiers

PMID33627739
PMCPMC7904949
OpenAlexW3129773007

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.