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Biophysical Linkage between MRI and EEG Amplitude in Closed Head Injury

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Check out this Knowledge Base article from StressTherapy Solutions: Biophysical Linkage between MRI and EEG Amplitude in Closed Head Injury.

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Study at a glance

Area
TBI & Concussion
Study type
Observational study
Authors
Thatcher RW, Biver C, McAlaster R, Camacho M, Salazar A
Journal
NeuroImage
Year
1998
Participants
19 patients (18 men, 1 woman, ages 19-48)
Population
Adults
Protocol
quantitative MRI (T2 relaxation) and EEG amplitude

Key findings

  • Longer white matter T2 times correlated with increased delta (0.5-3.5 Hz) amplitude
  • Longer gray matter T2 times correlated with reduced alpha and beta (7-22 Hz) amplitude
  • Longer T2 times in gray and white matter were associated with poorer cognitive function
  • Lower alpha and beta and higher delta amplitude also tracked poorer cognitive function

DOI 10.1006/nimg.1998.0330 → PubMed 9626675 →

This study looked for a physical link between MRI tissue measures and EEG in 19 patients with closed head injury. The researchers measured T2 relaxation times (an MRI index of brain tissue water) in gray and white matter alongside absolute EEG amplitude and neuropsychological performance. The relationship differed by EEG frequency and by tissue type. The authors conclude that the state of the brain's protein-lipid structures seen on MRI is biophysically linked to scalp-recorded EEG.