FIGURE 2.

Psychophysical quantification of performances in rats and humans. (A) The averaged responses to bimodal stimuli in different SOAs in rats. Positive SOAs represent trials in which the visual stimulus was presented first. Negative SOAs represent trials in which the auditory stimulus was presented first. Black circles indicate the average responses across eight rats, and the black line shows the sigmoidal fit (cumulative Gaussian function) to performance values. The mean of the sigmoidal fit represents the point of subjective simultaneity (PSS) and the sigma represents the temporal sensitivity (slope of the sigmoidal function). (B) The average performance across human subjects (n = 10) and the fitted sigmoid. Color conventions are the same as (A). (C) The average values of upper (visual) and lower (auditory) lapse rates, slope (temporal sensitivity) and PSS plotted for rats and humans. Error bars indicate ± SEM across subjects.