FIGURE 2.

Schematic illustration of the effects of US devaluation on execution of a CR after standard (A) and extended (B) Pavlovian training in crickets. Crickets that had received standard training (4-trial × 1-day training) or extended training (4-trial × 3-day training) to associate an odor CS with water US were given water until they stopped drinking prior to the post-training test (Mizunami et al., 2019). In the test, crickets that had received standard training exhibited no significant preference for the CS over a control odor (i.e., did not spend a significantly longer time for exploring at the CS odor source than at the control odor source), whereas crickets that had received extended training exhibited a significant preference for the CS over the control odor (i.e., spent a significantly longer time for exploring at the CS odor source), as did control crickets that received no US devaluation before the test.