PMC

Scatter plots demonstrate the relationship between the percentage of correct AS responses and tests of executive function: modified trails (A), design fluency (B) and the Stroop task (C). Circles indicate subjects with low education (unfilled) and high education (filled). Lines indicate the trend for all subjects (thick, solid), subjects in the low education group (thin, solid) and subjects in the high education group (dotted). * indicates p < 0.05; ** indicates p < 0.001.

The eye movement paradigm consisted of 1000 ms of central fixation followed by a 200 ms gap and an eccentric target for 1000 ms (illustrated as moving to the right) (A). Relative to target position (B), representative eye traces for a correct response (C), a self-corrected error response (D) and an uncorrected error response (E) are shown. In B-E, down indicates left and up indicates right; this particular trial indicates a target to the left.

Regions of interest are visualized in axial views at z values of 35 mm (A), 45 mm (B), 55 mm (C), as well as a rendered whole brain image with a cutout at y value of 0 mm (D) on the CH2bet template. Brown = left DLPFC, red = left IFJ, light blue = left FEF, yellow = left SEF, orange = right SEF, green = right FEF, dark blue = right IFJ, tan = right DLPFC, purple = left PEF, pink = right PEF.