Fig 1.

Schematic illustrations of object-place-context (OPC) recognition test (A), place recognition test (B), and object recognition test (C). Each test consists of sample phase (5, 15 or 30 min), retention interval (24 hours), and test phase (5 min). A successful discrimination is defined as a preferential exploration of the ‘object in a novel context-place combination’ in OPC recognition test, ‘the object in a novel location’ in place recognition test or ‘the novel object’ in object recognition test and is indicated by dashed arrows. Mean (±SEM) time spent in exploration for each object in sample phase of OPC recognition test (D), place recognition test (E), and object recognition test (F). Mean (±SEM) time spent in exploration for each object in test phase of OPC recognition test (G), place recognition test (H), and object recognition test (I). A two-way (Phase × Object) ANOVA followed by a post-hoc Scheffe test was used for the analysis of the exploration time in sample phases of OPC recognition test. A paired Student’s t-test was used for comparison between familiar and novel objects. *p < .05.