Maximum PER Response [%] to Odorants Relative to Occurrence in Mixtures.

The odorants are listed alphabetically. Given are the percentages of maximum Proboscis-Extension-Reflex (PER) response to each odorant (N = 20–28 bees), depending on whether the odorant was learnt when presented on its own (Alone) or learnt when presented as part of mixture 1 (Mix 1), mixture 2 (Mix 2) or mixture 3 (Mix 3). For mixture composition see Table 2. -: Odorant was not part of the mixture.