Biomechanics of the Acoustic-Lateralis System in Fish
1990
Zakrajsek, James J. | Oswald, Fred B. | Townsend, Dennis P. | Coy, John J.
Fish have evolved a complex passive system for the detection of acoustic pressure and particle motion that rivals any man-made system. Rogers has presented a hypothesis that one fish could perceive nearby fish by recognising the scattering of the ambient noise by other swimladder. Two experiments will be performed on goldfish and oscars to examine the basic premises of this hypothesis. The first experiment will characterize the scattering of sound by a fish by measuring the frequency response in vivo of the swimladder using a continuous wave ultrasound measurement system. A second will use classical heart rate conditioning to determine if a fish could sense a similarly shaped filtered noise signal against a background of ambient noise. The results of this research may help shed light on the biological relevance of hearing in fish.
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