Figure 1.

Sensitivity of memory formation to protein synthesis inhibition 24 h after training does not depend on the US duration. On day 1, animals were subjected to three CS–US pairings (A1–A3) with a short (2 s, circles) or long (10 s, triangles) US presentation (acquisition). After 24 h, on day 2, emetine (black symbols) or PBS (gray symbols) was injected. On day 3, memory was tested (retention). Presented are percentages of bees showing the CR to the CS at different phases of the experiment. Arrow, Time of injection. Number of animals: long-Eme, n = 72; long-PBS, n = 77; short-Eme, n = 67; short-PBS, n = 74.