Research Update: Measuring Cognitive Fatigue After TBI

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A brief summary of current research.

The neural correlates of cognitive fatigue in traumatic brain injury using functional MRI

Kohl, AD, Wylie, GR, Genova, HM, Hillary, FG, DeLuca, J Brain Injury, Volume 23, Issue 5 May 2009, pp 420 – 432.

This study used functional magnetic resonance imaging (fMRI) to objectively assess cognitive fatigue in people with TBI. When performing a cognitive task, the participants with TBI showed increased brain activity over time, compared to the non-injured participants. This increased activity in various parts of the brain, which indicates increased cerebral "effort," might manifest as an individual’s feeling of cognitive fatigue.

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