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Auditory evoked potentials in a stranded Gervais’ beaked whale (Mesoplodon europaeus)
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10.1121/1.3133241
/content/asa/journal/jasa/126/1/10.1121/1.3133241
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/1/10.1121/1.3133241
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Photograph of the beaked whale subject showing the positions of the three surface electrodes and jawphone.

Image of FIG. 2.
FIG. 2.

(a) Time waveforms and (b) frequency spectra for two click-evoked potentials. For comparison to previously published data, waveforms are displayed with upward deflection indicating negativity of the electrode relative to the (−) electrode.

Image of FIG. 3.
FIG. 3.

Hearing thresholds as a function of sound frequency. Circles–M. europaeus, present study. Filled circles indicate estimated thresholds, defined as the mean of the SPLs corresponding to the lowest detected AEP and the next highest nondetection. Open circles indicate the highest SPLs tested with no detected AEPs (MSC with 16 subaverages and sweeps). Open triangles–M. europaeus, Cook et al. (2006). Filled triangles–. truncatus, Houser and Finneran (2006b). Symbols indicate mean thresholds for ten individuals with upper cutoff . Error bars represent ± 1 SD.

Image of FIG. 4.
FIG. 4.

MRTF (a) amplitude and (b) phase angle measured for the beaked whale. Filled symbols indicate detected responses, and open symbols indicate no detection (MSC, with 16 subaverages and sweeps). Note the difference in abscissa scales. The solid line in (b) is a linear fit to the phase data up to 1 kHz, above which the frequency spacing was too large to prevent whole-cycle phase ambiguity.

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/content/asa/journal/jasa/126/1/10.1121/1.3133241
2009-07-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Auditory evoked potentials in a stranded Gervais’ beaked whale (Mesoplodon europaeus)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/126/1/10.1121/1.3133241
10.1121/1.3133241
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