Fig 1.
N-back working memory task for auditory and visual task for each 0-back and 2-back conditions.
The task blocks were each 34-seconds long with the resting period of 15-seconds in between.
Fig 2.
Sensor position on the prefrontal cortex region with respect to Fpz (International 10–20 system).
Yellow dots: Sources, Blue dots: Detectors. Numbers indicate the loaction of the channels based on the source-detector pairs. The dotted squares indicate channel parinings.
Fig 3.
Estimated marginal means of WM activation level across all tasks in different PFC regions.
Fig 4.
Differences in activation between high performance (HP) and normal performance (NP) groups.
Both auditory and visual NP groups showed higher activation in PFC compared to their high-performance cohorts in right DLPFC during visual (a) and left DLPFC and MPFC during auditory (b) tasks.
Fig 5.
Significant correlation between VARK score and level of activation.
(a) in left DLPFC VARK visual score was correlated with level of activation during performance of auditory task while (b) VARK aural score was correlated with level of activation in left and right DLPFC during performance of visual task.
Fig 6.
Differences between high performance and normal performance groups in visual and aural VARK scores.
(a) during performance of visual task and (b) during performance of auditory task.