PMID: 15237832Jul 9, 2004Paper

Siamang gibbons exceed the saccular threshold: intensity of the song of Hylobates syndactylus

The Journal of the Acoustical Society of America
Neil P McAngus Todd, Bjorn Merker

Abstract

Measurements are reported of the intensity of the siamang gibbon loud call obtained from the vocal bouts of three family groups at Twycross Zoo, UK. Across 25 samples the maximum intensity ranged from 95 to 113 dB SPL (linear frequency-weighting and fast time-weighting) and exhibited three frequency modes of 250-315 Hz, 630-800 Hz and 1.2-1.6 kHz. The lowest frequency mode, which may correspond to the "boom" sound produced by resonance of the siamang inflated vocal sac, had a mean maximum intensity of 99 dB SPL. These values, which are in excess of the saccular acoustic threshold of about 90 dB at 300 Hz for air conducted sound, suggest that primate loud calls recruit a primitive mode of acoustic sensitivity furnished by the sacculus. Thus reproductive vocal behavior of primates may be influenced by a primitive acoustical reward pathway inherited from a common ancestor with anamniotes. In humans such a pathway could explain the compulsion for exposure to loud music.

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Citations

Nov 18, 2005·Experimental Brain Research·Stefanie Hannig, Uwe Jürgens
Sep 25, 2010·Journal of Applied Animal Welfare Science : JAAWS·Elissa L PearsonCarla A Litchfield
Dec 22, 2006·PloS One·Esther ClarkeKlaus Zuberbühler
Jan 15, 2008·The Journal of the Acoustical Society of America·Neil P McAngus Todd
Dec 3, 2008·The Journal of the Acoustical Society of America·Rüdiger RieschFrank Thomsen
May 13, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Neil P McAngus ToddJames G Colebatch
Sep 18, 2015·Frontiers in Human Neuroscience·Neil P M Todd, Christopher S Lee
Dec 11, 2013·Hearing Research·Neil P M ToddJames G Colebatch
Jun 7, 2018·American Journal of Physical Anthropology·Brittany FlorkiewiczUlrich H Reichard
Oct 10, 2019·Journal of Neurophysiology·James G Colebatch, Sally M Rosengren

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