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Underwater psychophysical audiogram of a young male California sea lion (Zalophus californianus)a)
a)Portions of this data were presented at the 2nd International Conference on the Effects of Noise on Aquatic Life in Cork Ireland, August 15–20, 2010.
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10.1121/1.3699195
/content/asa/journal/jasa/131/5/10.1121/1.3699195
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/5/10.1121/1.3699195

Figures

Image of FIG. 1.
FIG. 1.

Underwater psychophysical audiograms for three California sea lions: JFN (this study), Rio (Reichmuth and Southall, 2011), and Sam (Schusterman et al., 1972). Error bars indicate one standard deviation. The 75% correct detection criterion used for Sam helps to explain the higher thresholds; a 50% correct detection criterion was used for the other two sea lions (see Reichmuth and Southall, 2011, for a discussion).

Image of FIG. 2.
FIG. 2.

Underwater psychophysical (this study) and aerial ASSR and psychophysical audiograms (Mulsow et al., 2011b) for a 2-year-old male California sea lion. Data are plotted in units of dB re maximum sensitivity for each method. Error bars indicate one standard deviation, except in the case of the ASSR threshold at 22 kHz, where only one measurement was made. Aerial data are shifted slightly along the x-axis for clarity.

Tables

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TABLE I.

Underwater hearing thresholds and corresponding false alarm rates for a 2-year-old California sea lion. Stimuli were linear FM tones (10% bandwidth) with center frequency given in the first column.

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2012-05-04
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Underwater psychophysical audiogram of a young male California sea lion (Zalophus californianus)a)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/131/5/10.1121/1.3699195
10.1121/1.3699195
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