Fig. 6.

Illustration of a trial sequence. Encoding Block: Each trial starts with a fixation cross for 1 s, followed by a picture presented for 2 s and a blank screen for 200–500 ms, repeated 180 times. Test block: Each trial starts with a fixation cross presented for 1 s, followed by a picture presented for 2 s and participants had to decide with a button press whether the picture was old or new and how confident they were about their decision on a scale from 1 (sure new) to 6 (sure old). If they pressed 1–3 (“old”), they had to indicate afterwards whether they remembered or just knew the scene. If they pressed 4–6 (“new”), they had to indicate whether the scene was simply unfamiliar to them (“it feels new, but I do not know why”) or whether particular details in the scene were particularly new to them