Fig. 1: Interacting perception of duration and intensity.
From: Direct contribution of the sensory cortex to the judgment of stimulus duration
a Rat enters nose poke, bringing its right whiskers into plate contact. Following a pre-stimulus delay (0.5 s), stimulus 1 is delivered through plate motion. Stimulus 2 is presented after the 2-s inter-stimulus delay. Acoustic go cue prompts the rat to make a choice. b Upper: performance of duration rats (n = 6) with choices computed according to duration and intensity rules. Lower: performance of intensity rats according to duration and intensity rules (n = 10). Analysis of choices according to duration rule done on trials with largest ΔT; analysis of choices according to intensity rule done on trials with largest ΔI. Each dot represents a single subject. c Upper: Psychometric curves of both sets of rats based on ΔT. Lower: Psychometric curves of both sets of rats based on ΔI. Both plots are averaged across all subjects. d Upper: Intensity-dependent bias in perceived duration. For a given ΔI, bias is the average of the percent of trials judged T2 > T1 across ΔT values. Lower: Duration-dependent bias in perceived intensity, computed in the analogous way. Bias measure details in Methods. Standard error of the mean (SEM) across animals (upper: n = 6 rats, examined over 531 independent experiments; lower: n = 10 rats, examined over 878 independent experiments) indicated as error bars. Part of the behavioral data presented here reanalyzed from an earlier study5 (all 6 duration rats shown in their Fig. 1c, and 7 of 10 intensity rats shown in their Figure 6B). Source data are provided as a Source Data file.
