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Underwater equal-latency contours of a harbor porpoise (Phocoena phocoena) for tonal signals between 0.5 and 125 kHz
Wensveen, P.J.; Huijser, L.A.E.; Hoek, L.; Kastelein, R.A. (2016). Underwater equal-latency contours of a harbor porpoise (Phocoena phocoena) for tonal signals between 0.5 and 125 kHz, in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 1223-1228. hdl.handle.net/10.1007/978-1-4939-2981-8_153
In: Popper, A.N.; Hawkins, A. (Ed.) (2016). The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875. Springer Science+Business Media, Inc: New York. ISBN 978-1-4939-2980-1. xxx, 1292 pp., more
In: Advances in Experimental Medicine and Biology. Springer: Berlin. ISSN 0065-2598, more
Peer reviewed article  

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Keywords
    Loudness; Reaction time; Odontocete Flower, 1865 [WoRMS]; Marine
Author keywords
    Auditory weighting; Noise effects

Authors  Top 
  • Wensveen, P.J.
  • Huijser, L.A.E.
  • Hoek, L.
  • Kastelein, R.A.

Abstract
    Loudness perception can be studied based on the assumption that sounds of equal loudness elicit equal reaction time (RT; or “response latency”). We measured the underwater RTs of a harbor porpoise to narrowband frequency-modulated sounds and constructed six equal-latency contours. The contours paralleled the audiogram at low sensation levels (high RTs). At high-sensation levels, contours flattened between 0.5 and 31.5 kHz but dropped substantially (RTs shortened) beyond those frequencies. This study suggests that equal-latency-based frequency weighting can emulate noise perception in porpoises for low and middle frequencies but that the RT-loudness correlation is relatively weak for very high frequencies.

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