Figure 4.

Time required for the transfer of learned behaviour. Habituation index according to fusion length. Slime moulds were allowed to fuse for either 1 or 3 h before being separated again and tested individually with the repellent. Habituated slime moulds (H) were habituated to the repellent (NaCl) for 5 days before the fusion. Unhabituated slime moulds (U) followed the same habituation protocol but without the repellent. Values close to 0 indicate an aversion to NaCl, whereas values largely above 0 indicate a habituation to the repellent. The underlined dot represents the slime mould under scrutiny. CI of the unhabituated slime moulds are delineated by shaded areas. n = 500 slime moulds in total. Error bars indicate +95% CI. (Online version in colour.)