Application of the theory of signal detectability to the perception of differences in load

In applying the theory of signal detectability to the perception of differences in load on a bicycle ergometer, the distributions of signal and noise were tested for normality and equality of variances. Two subjects cycled on a basic load of 40% of their VO2 max. Each subject operated under five different response criteria. The results showed that the assumptions of normality and equality of variance were observed in both cases.