Fig. 3
Experimental flow. The figure shows an example of trial (a), block (b) and sequence of blocks (c). a Each trial started with an ISI (random duration between 3–5 s). The stimulus was presented for 2 s and followed by a delay of 5 s (i.e., learning phase). Two spatial judgments were required subsequently. Each question appeared for 3 s, during which participants had to provide spatial judgment through motor response. A second delay of 5 s was presented between 1st and 2nd spatial judgments (i.e., testing phase). b Each block started with a brief instruction presented for 5 s informing the participant about the pair of spatial judgments to provide. The following instructions could appear: BODY–BODY (two egocentric spatial judgments); OBJECT–OBJECT (two allocentric spatial judgments); BODY–OBJECT (an egocentric then an allocentric spatial judgment); OBJECT–BODY (an allocentric then an egocentric spatial judgment). c Each sequence included the four spatial tasks (i.e., Ego-Ego, Allo-Allo, Ego-Allo, Allo-Ego) that were presented in a pseudo-randomized order across participants.
