Fig. 2.

Episodic-like Memory behavioral task. Rats are presented with four identical objects for 5 mins in two consecutive Sample sessions separated by a 50 min inter-trial interval. This arrangement creates items that vary temporally (distant vs recent). After another 50 min the animals are presented with 2 copies of both the distant and recent objects, one of which has been moved to a novel location (stationary vs displaced). This design presents rats in the test session with four objects which vary on all three components of episodic-like memory: what (object identity), when (distant vs recent), and where (stationary vs displaced).