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. 2013 Jun;82(1):43-57.
doi: 10.1016/j.bandc.2013.02.006. Epub 2013 Mar 16.

Aerobic fitness and intra-individual variability of neurocognition in preadolescent children

Robert Davis Moore  1 , Chien-Ting Wu, Matthew B Pontifex, Kevin C O'Leary, Mark R Scudder, Lauren B Raine, Christopher R Johnson, Charles H Hillman
Affiliations

Aerobic fitness and intra-individual variability of neurocognition in preadolescent children

Robert Davis Moore et al. Brain Cogn. 2013 Jun.

Abstract

This study examined behavioral and neuroelectric intra-individual variability (IIV) in preadolescent children during a task requiring variable amounts of cognitive control. The current study further examined whether IIV was moderated by aerobic fitness level. Participants performed a modified flanker task, comprised of congruent and incongruent arrays, within compatible and incompatible stimulus-response conditions. Results revealed that congruent, relative to incongruent, conditions were associated with less IIV of RT. Further, less IIV of RT, P3 amplitude, and P3 latency was observed for the compatible relative to the incompatible condition. Higher fitness was associated with shorter and less variable RT only for the incompatible condition, with no fitness-related differences observed for P3 variability. The findings suggest that conditions requiring greater cognitive control are associated with increased IIV, and that higher fitness may be associated with greater integrity of cognitive control systems during development.

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Figures

Figure 1
Figure 1
Congruency and compatibility effects of task performance for Gaussian and ex-Gaussian variables. *p < .05.
Figure 2
Figure 2
Grand average waveforms for each of the midline electrode sites across all condition of the flanker task.
Figure 3
Figure 3
Congruency and compatibility effects for P3 amplitude and latency. *p < .05.
Figure 4
Figure 4
Scatter plots depicting the relation between fitness with Gaussian and ex-Gaussian variables for the incompatible condition of the flanker task.
See this image and copyright information in PMC

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