Neuroimaging During Events
An individual in the midst of a prolonged TEA attack was given a PET scan which revealed "dramatic and circumscribed hypermetabolism in the left medial temporal lobe" and his "fluid-attentuated inversion-recovery MRI scan revealed high signal in the left hippocampus." Surface EEG recording during an amnesic attack was performed in ten TEA cases. "All recordings showed seizure activity, which in 8/10 cases involved both temporal lobes and in the others remained unilateral (1 left and one right-sided)." "Another patient was having an EEG when a TGA event occurred; the trace showed a one-minute burst of left temporal spikes, followed by normalization of the EEG. MRI or CT scans have been reported in 62 TEA cases, with a very low incidence of clinically significant findings. Those focal brain lesions that have been detected have involved the medial temporal lobes. Typically, MRI and CT findings are not remarkable.
Read more about this topic: Transient Epileptic Amnesia
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“Custom, then, is the great guide of human life. It is that principle alone, which renders our experience useful to us, and makes us expect, for the future, a similar train of events with those which have appeared in the past.”
—David Hume (1711–1776)