Figure 9.

Indirect transfer. Flies are either trained (squares) or just exposed to the chamber without heat (triangles). Between conditioning and test, flies are first transferred to a food vial for the indicated time and then back to a new chamber where all flies undergo a short training of 30 sec and a final 6-min retention test. Control animals (naïve; filled circle) undergo only the 30-sec training and the final test. Each group includes about 200 flies. Figure shows performance indices (PIs) of the final 6-min test phases.