fMRI/EEG in paroxysmal activity elicited by elimination of central vision and fixation.
case_series · Level IV
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Abstract
Using functional MRI (fMRI) with concurrent EEG monitoring the authors studied cortical activation associated with epileptiform discharges in three patients with fixation-off sensitivity. The EEG paroxysmal activity elicited by eliminating central vision correlated significantly with an increased blood oxygen level-dependent signal in the extrastriate cortex (Brodmann areas 19 and 37). fMRI provides a unique opportunity for localizing precisely the cortical areas generating paroxysmal activity in patients with fixation-off sensitivity.
Medical subject headings
- Cerebral Cortex
- Electroencephalography
- Epilepsy
- Magnetic Resonance Imaging
- Vision Disorders
- Vision Disparity