Fig. 4: Experimental design and task details. | npj Science of Learning

Fig. 4: Experimental design and task details.

From: Offline consolidation mechanisms of the retrieval practice effect: an analysis based on EEG signal characteristics

Fig. 4

a On Day 1, participants learned word pairs at 12:00 PM. After a second learning session using one of three strategies, the nap group napped (1:00–3:00 PM) under PSG monitoring while the wake group remained awake. Both took an immediate test post-session. On Day 2, delayed tests occurred at 10:30 AM. New pairs were learned at 12:00 PM using another strategy, followed by identical procedures as Day 1. Day 3 replicated Day 2. On Day 4, delayed tests were administered for Day 3’s 32-word pairs. b During the initial learning, each word pair was presented for 3000 ms, followed by a 500 ms interval before the next pair. During testing, each word pair was presented for 8000 ms, followed by a 500 ms interval before the next pair. The nap group is represented by Air Force blue, while the wake group is depicted in sky blue.

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