Showing papers on "Photostimulation published in 1971"

Response of caudal photoreceptor of crayfish to continuous and intermittent photic stimulation.

Abstract: The response of the caudal photoreceptor of the crayfish to steady and intermittent photic stimulation was studied, with particular reference to decrement during prolonged stimulation.The same duration of photostimulation was applied in two patterns, continuous and intermittent, and the intensity of the light was kept constant throughout both patterns. At points with the same duration and intensity of stimulation, the decrement was greater when the receptor was driven with intermittent stimulation, within a certain repetition rate. After the response to repetitive short stimulation had waned, spontaneous restoration occurred during resting periods in the dark. A novel photostimuli intercalated into an intermittent photostimulation series did not restore the responsiveness to the previous level. The electrical stimulation of nerves from the telson and uropods, eliciting inhibition of discharge from the photoreceptors, diminished the photoresponses as it was applied; it increased the photoresponses coincide...