Fig. 1: ASRT task design.
From: Evidence for a competitive relationship between executive functions and statistical learning
a In Study 1, the task stimuli consisted of yellow arrows that pointed in one of the four cardinal directions. A fixation cross was presented between each arrow. b In Study 2, task stimuli were the head of a dog that appeared in one out of four different positions. c Each stimuli position can be coded with a number. Here, we have 1 = left, 2 = up, 3 = down, 4 = right for the arrows in Study 1, and 1 = left, 2 = center-left, 3 = center-right, 4 = right of the screen for the dog’s head in Study 2. d The stimulus presentation followed an eight-element sequence, in which pattern (P) and random (R) stimuli alternated. The sequence was presented a total of 10 times per block. e Sixty-four different triplets (runs of three consecutive stimuli) could result from the sequence structure. Some of the triplets appear more often than others. High-probability triplets could end in pattern or random element whereas low-probability triplets always ended with a random element. High- and low-probability triplets are denoted in green and yellow, respectively.
