Fig. 1.

Schematic drawing of the protocol in two memory tasks. a In the novel location recognition, two identical sample objects (A₁, A₂) were placed in the north-west (NW) and north-east (NE) corners of the box in the sample phase. In the 10-min phase and the 24-h phase, one of the sample objects (A₂) was moved to a novel location. b For the episodic-like memory task, during the first and second sample trials, the objects were arranged as the figure shows. In the test trial, two objects B (old objects from the first sample trial) were placed in the south-west (old stationary object) and NE corner (old displaced object). Two recent objects C were placed in the other two corners