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. 2015 Mar 16;10(3):e0118705. doi: 10.1371/journal.pone.0118705

Fig 1. Procedure of the experiment during the three conditions.

Fig 1

SUR condition: (left) a trial where the participant looks at the button triggering the appearance of the rectangle in the fixed position; (right) a trial where the participant looks at the button triggering the appearance of the rectangle in a random position. NOV condition: (left) a trial where the participant looks at the button triggering the appearance of the rectangle in the fixed position; (right) a trial where the participant looks at the button triggering the appearance of an always-novel picture always at the centre of the screenl. SUR-NOV condition: (left) a trial where the participant looks at the button triggering the appearance of an always-new picture always at the centre of the screen; (right) a trial where the participant looks at the button triggering the appearance of the blue rectangle that appears in random locations of the screen at each trial. For all the conditions the pictures are shown for 2.0 sec after which the buttons can be pressed again; the transparent buttons are those that the participant did not press (during the experiment the two buttons have the same appearance).