Figure 2.

Comparison of individual threshold rat estimates, estimated from response accuracy of octanol serial dilutions. Abscissa refers to descending concentrations (% v/v) of the aliphatic odorants. Each panel/symbol represents discrimination accuracy for the target odorant (1-octanol) versus the control odorant (diethyl phthalate) for an individual rat. Functions (lines with 3 symbols) represent accuracy across 3 consecutive blocks for each concentration. The lowest concentration at which the animal received 85% or greater on at least 1 of the 3 blocks was recorded as threshold.