Article

Electroencephalography

Michael B. Gaetz and Kelly J. Jantzen

in The Oxford Handbook of Sports-related Concussion

ISBN: 9780199896585
Published online May 2016 | e-ISBN: 9780199984756 | DOI: http://dx.doi.org/10.1093/oxfordhb/9780199896585.013.006
Electroencephalography

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Axonal injury is currently considered to be the structural substrate behind most concussion-related neurological dysfunction. Because the principal generators of EEG fields are graded excitatory and inhibitory synaptic potentials of pyramidal neurons, the EEG is well suited for characterizing large-scale functional disruptions associated with concussion induced metabolic and neurochemical changes, and for connecting those disruptions to deficits in behavior and cognition. This essay provides an overview of the use of EEG and newly developed analytical procedures for the measurement of functional impairment related to sport concussion. Elevations in delta and theta activity can be expected in a percentage of athletes and change in asymmetry and coherence may also be present. Newer techniques are likely to be of critical importance for understanding the anatomical and physiological basis of cognitive deficits and may provide additional insight into susceptibility to future injury. Computational modeling may advance our understanding of concussion.

Keywords: mild traumatic brain injury; concussion; electroencephalography; evoked potential; event-related potential; axonal injury

Article.  11244 words. 

Subjects: Neuropsychology

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