Figure 2.

Mice deficient in brain Crtl1 show persistent memory on an object recognition paradigm. A, Schematic diagram of the experimental design. B, Photographs of eight representative object pairs used for object recognition experiments (of 12 pairs used in total). C, Sample phase. Illustration of the procedure (left) and sample exploration times before and after chABC treatment plotted separately for each delay (right). D, Choice phase. Illustration of the procedure (left) and discrimination rates after each delay before and after chABC treatment (right). Data are presented as mean ± SEM. *p < 0.05, simple main effect.