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The Fetcho Lab
Neurobiology & Behavior
Life Science Bldg.
SUNY at Stony Brook
Stony Brook, NY 11794-5230
631-632-9047
FAX 631-632-6661
Site Maintained by
Melissa Bishop/DoIT
Last Modified 11/18/99 04:09:41 PM EST
A fish in slow motion...
From the "tap" until he stops at the last frame takes about 3.8 seconds to play on our computer. (Your mileage may vary.) In real life, the fish traversed that distance in 0.067 seconds (67 frames x 0.001 sec/frame), more than 50 times faster than the movie.
Methods
Images were captured via a high-speed camera from Adaptive Optics. To elicit an escape response, a tap stimulus was delivered via a fire-polished glass probe, attached to a stabilized piezo-electric crystal. The crystal deforms when voltage is applied across it, allowing the timing and magnitude of the stimulus to be controlled electronically. Motion analysis is then done through a specially written computer program, created through Lab View.