Increment sensitivity of the eye of Limulus.
D000200:Action Potentials; D000221:Adaptation, Ocular; D000704:Analysis of Variance; D000818:Animals; D002415:Cats; D003445:Crustacea / Q000502:physiology*; D006801:Humans; D008027:Light; D009799:Ocular Physiological Phenomena; D010786:Photoreceptor Cells / Q000502:physiology; D011336:Probability