Expert cognitive control and individual differences associated with frontal and parietal white matter microstructure
R Edward Roberts1, Elaine J Anderson, Masud Husain
1University of Cambridge, Faculty of Economics, Cambridge, CB3 9DD, United Kingdom. rer40@cam.ac.uk
Summary
Fighter pilots show enhanced cognitive control and unique brain structure differences. Their expertise involves heightened sensitivity to stimuli, linked to white matter changes in frontal and parietal lobes.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Human Factors
Background:
- Individual differences in cognitive control remain poorly understood.
- Functional imaging studies link frontal activity to cognitive control tasks.
- Expertise, like that of fighter pilots, may offer insights into cognitive control variations.
Purpose of the Study:
- To compare cognitive control behavior and brain structure between fighter pilots and healthy controls.
- To investigate how expertise influences performance on tasks involving distractors and action plan updates.
- To explore the relationship between white matter structure and individual differences in cognitive control.
Main Methods:
- Utilized Eriksen Flanker and change of plan tasks to assess cognitive control.
- Employed diffusion-weighted imaging to examine white matter structure (radial diffusivity).
- Correlated behavioral performance metrics with neuroimaging data.
Main Results:
- Fighter pilots exhibited superior accuracy and post-conflict adaptation on the Flanker task.
- Pilots showed increased sensitivity to distractors but no advantage in inhibiting action plans.
- Differences in white matter radial diffusivity were found in frontal and parietal lobes, correlating with reaction time costs.
Conclusions:
- Expert cognitive control may involve enhanced response gain to both relevant and irrelevant stimuli.
- Structural alterations in frontal and parietal white matter accompany expert cognitive control.
- Individual differences in cognitive control performance are associated with specific white matter microstructural patterns.
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