Fig. 1. Acquisition curves displayed as the probability P of moths responding to odour presentation, prior to sucrose presentation, for the three odours used in the conditioning phase of experiment 1: 1-hexanol (N=80) 2-hexanone (N=80) 1-decanol (N=80). Note the clear and consistent pattern across all three odourants of acquisition that peaks between trials 3 and 5 then begins to decrease on the sixth trial.

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