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Updated: Mar 29, 2026

A Method for Tracking the Time Evolution of Steady-State Evoked Potentials
Published on: May 25, 2019
Using Reaction Time and Equal Latency Contours to Derive Auditory Weighting Functions in Sea Lions and Dolphins
James J Finneran1, Jason Mulsow2, Carolyn E Schlundt3
1US Navy Marine Mammal Program, Space and Naval Warfare Systems Center (SSC) Pacific, Code 71510, 53560 Hull Street, San Diego, CA, 92152, USA. james.finneran@navy.mil.
Abstract:
Subjective loudness measurements are used to create equal-loudness contours and auditory weighting functions for human noise-mitigation criteria; however, comparable direct measurements of subjective loudness with animal subjects are difficult to conduct. In this study, simple reaction time to pure tones was measured as a proxy for subjective loudness in a Tursiops truncatus and Zalophus californianus. Contours fit to equal reaction-time curves were then used to estimate the shapes of auditory weighting functions.
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