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Bullock, Theodore H.; Domning, Daryl Paul; Best, Robin Christopher
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1980 |
Evoked brain potentials demonstrate hearing in a manatee (Trichechus inunguis).
Jour. Mamm. 61(1): 130-133. 1 fig. Feb. 20, 1980.
–Portuguese transl.: Bullock et al. (1981). Abstr.: Bullock et al. (1977). Reports that the most effective frequency was circa 3 kHz. Compares the hearing range with the range of vocalizations in other sirs. The most sensitive region of the head was found to be over the zygomatic process of the squamosal.
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Bullock, Theodore H.; O'Shea, Thomas J.; McClune, Michael C.
(detail)
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1982 |
Auditory evoked potentials in the West Indian manatee (Sirenia: Trichechus manatus).
Jour. Comp. Physiol. 148A(4): 547-554. 3 figs.
–Some ultrasonic sensitivity was detected (to 35-40 kHz); the most effective frequencies and power spectra were both found to be lower in T. manatus than in T. inunguis; the greatest sensitivity was found in the region of the external auditory meatus.
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Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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