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Detection of complex sounds in quiet conditions by seals and sea lions
Cunningham, K.A.; Southall, B.L.; Reichmuth, C. (2016). Detection of complex sounds in quiet conditions by seals and sea lions, in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 181-187. hdl.handle.net/10.1007/978-1-4939-2981-8_21
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  

Available in Authors 

Keywords
    Hearing; Phoca vitulina Linnaeus, 1758 [WoRMS]; Marine
Author keywords
    Zalophus californianus; California sea lion; Harbor seal; Pinniped; Threshold

Authors  Top 
  • Cunningham, K.A.
  • Southall, B.L.
  • Reichmuth, C.

Abstract
    To test how accurately baseline audiometric data predict detection of complex stimuli, absolute detection thresholds for frequency-modulated (FM), amplitude-modulated (AM), and harmonic stimuli were obtained for one Phoca vitulina (harbor seal) and one Zalophus californianus (California sea lion) at frequencies spanning the functional range of hearing. These thresholds were then compared with a priori predictions based on the tonal audiograms of these subjects. Predicted thresholds were accurate for most FM signals and for AM signals for the California sea lion. Predictions were unreliable for harmonic signals for both species and for AM signals for the harbor seal.

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