Life Sciences

Crayfish Eye

The eye of a crayfish is removed and electrodes are implanted in it so that the electrical response of the eye to various forms of stimulation by light can be examined. Response to a continuous source of white light, a strobe light (variable frequency) with flashes equally spaced, and pairs of flashes (time between flashes in a pair can be adjusted) can be observed. With these variables, flicker fusion can be easily demonstrated (Flicker fusion allows us to see a movie (24 flashes per second) as a continuous flow of events).

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