Interrelationships between intranarial pressure and biosonar clicks in bottlenose dolphins (Tursiops truncatus)

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Title: Interrelationships between intranarial pressure and biosonar clicks in bottlenose dolphins (Tursiops truncatus)
Author: Elsberry, Wesley Royce
Abstract: Recent advances in technology permitted the first simultaneous digital recording of intranarial pressure and on -axis acoustic data from bottlenose dolphins during a biosonar target recognition task . Analysis of pressurization events in the intranarial space quantifies and supports earlier work , confirming that intranarial pressure is increased when whistle vocalizations are emitted . The results show complex relationships between various properties of the biosonar click to the intranarial pressure difference at the time it was generated . The intranarial pressure that drives the production of clicks is not the primary determinant of many of the acoustic properties of those clicks . A simple piston -cylinder physical model coupled with a sound production model of clicks produced at the monkey -lips /dorsal bursae complex yields an estimate of mechanical work for individual pressurization events . Individual pressurization events are typically associated with a single click train . Mechanical work for an average pressurization event is estimated at 10 Joules .
URI: http : / /hdl .handle .net /1969 .1 /554
Date: 2004-09-30

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Interrelationships between intranarial pressure and biosonar clicks in bottlenose dolphins (Tursiops truncatus). Available electronically from http : / /hdl .handle .net /1969 .1 /554 .

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