Confusion and human errors in locating synthetic frog calls: Insights into the evolution of a vocal communication signal.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Confusion and human errors in locating synthetic frog calls: Insights into the evolution of a vocal communication signal.
Συγγραφείς: Faizpurkar H; Biological and Life Sciences Division, School of Arts and Sciences, Ahmedabad University, Ahmedabad, Gujarat, India., Jones DL; Department of Electrical and Computer Engineering, College of Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA., Ratnam R; Biological and Life Sciences Division, School of Arts and Sciences, Ahmedabad University, Ahmedabad, Gujarat, India. rama.ratnam@ahduni.edu.in.
Πηγή: Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology [J Comp Physiol A Neuroethol Sens Neural Behav Physiol] 2026 Sep; Vol. 212 (5), pp. 855-867. Date of Electronic Publication: 2026 May 03.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Springer Country of Publication: Germany NLM ID: 101141792 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1351 (Electronic) Linking ISSN: 03407594 NLM ISO Abbreviation: J Comp Physiol A Neuroethol Sens Neural Behav Physiol Subsets: MEDLINE
Imprint Name(s): Original Publication: Berlin ; New York : Springer, c2001-
Ιατρικοί όροι (MeSH): Vocalization, Animal*/physiology , Anura*/physiology , Sound Localization*/physiology , Biological Evolution*, Animals ; Humans ; Acoustic Stimulation ; Male
Περίληψη: Vocal communication behavior in anurans is energetically expensive and can reveal caller locations, making them vulnerable to predation. Thus, it is likely that calls have been selected to minimize energy and make signals difficult to locate. In earlier work, Jones and Ratnam (2023) suggested that differences in the acoustic receivers of anurans and mammals may be exploited to make anuran calls difficult for mammals to locate, thereby reducing some if not all predation pressure. To test some of these ideas, this study examined sound localization performance in human listeners in response to a synthetic narrowband frog call (pulsed calls of the gray treefrog Dryophytes versicolor, 28% duty-cycle) and its variations, in a dichotic listening task using interaural time differences (ITD) alone. Sounds which were easy to locate (positive control) and difficult to locate (negative control) were also tested. Localization performance in response to synthetic calls (64%) lay between those of positive control (86%) and negative control (32%, chance level). We argue that differences in performance were largely a function of call bandwidth. Among all the variations of calls that were tested (excluding controls), the synthetic call most closely resembling the gray treefrog call had the lowest call energy, the narrowest spectral bandwidth, and was the most difficult to localize. We suggest that calls may have been selected to keep their energy as low as possible by reducing their duty cycle and reducing spectral leakage to maintain narrowband characteristics.
(© 2026. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Competing Interests: Declarations. Conflcit of interest: The authors declare no competing interests.
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Grant Information: URBSASI20A5 Ahmedabad University
Contributed Indexing: Keywords: Anuran vocalization; Dichotic testing; Interaural time difference; Signal detection theory; Time-frequency trade-off
Entry Date(s): Date Created: 20260503 Date Completed: 20261006 Latest Revision: 20261006
Update Code: 20261007
DOI: 10.1007/s00359-026-01810-8
PMID: 42070177
Βάση Δεδομένων: MEDLINE