Discriminability of Change in Signal Flash-Rates
Department or Administrative Unit
Two experiments utilizing different psychophysical methods provided comparable estimates of the discriminability of differences in the rate of flashing of an alerting signal. In Exp. 1, a contingent-uncertainty analysis resulted in an estimated Weber ratio of < 0.07. In Exp. 2, the method of constant stimuli produced a mean Weber ratio of 0.06. Discriminability of flash rate differences was comparable for red and amber targets and for targets of ∼ 1° and 5° of visual angle.
Tolin, P., & Ryen, R. R. (1986). Discriminability of change in signal flash-rates. Perceptual and Motor Skills, 63(3), 1259–1264. https://doi.org/10.2466/pms.1922.214.171.1249
Perceptual and Motor Skills