An anticipated threshold technique for measuring contrast sensitivity.
A new psychophysical procedure for assessing contrast sensitivity rapidly and reliably is reported. The technique consists of increasing the contrast of a conventional sine wave grating according to the parameters set in a computer implemented algorithm. During the first half of a trial, the contrast increases quickly to a point just below an expected threshold, and in the second stage the contrast increases slowly until a threshold is reached. Details and advantages of the algorithm are presented as well as a comparison of data generated by this and other techniques.
D003201:Computers; D004056:Differential Threshold; D006801:Humans; D009103:Multiple Sclerosis / Q000175:diagnosis; D011601:Psychophysics / Q000379:methods*; D014787:Vision Tests / Q000295:instrumentation / Q000379:methods; D014785:Vision, Ocular / Q000502:physiology*