Figure 4.

Blockade of metabotropic GABA receptors in the calyces of the mushroom bodies does not affect reversal learning. Percentage of PER induced by odor A (solid line) and odor B (dotted line) during the first (A⁺ vs. B⁻) and the second phase (A⁻ vs. B⁺) of a reversal conditioning, after injections of either saline [PBS, n = 40, (A)] or CGP₅₄₆₂₆ [CGP, n = 40, (B)], which blocks metabotropic GABA receptors. ***p < 0.001 (Tukey HSD post hoc analysis on the last trial of each phase and retention test).