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. 2009 Sep 22;34(9):753–761. doi: 10.1093/chemse/bjp062

Figure 2.

Figure 2

Psychometric functions for single (unmixed) compounds. y axis: the log-odds ratio of chance-corrected pcorr. x axis: stimulus concentration in log ppm (by mass). The lines represent best-fit linear functions (least-squares regression). The functions for ML and octanoic acid (C8) are depicted on a separate graph for clarity.