An epileptic focus: Hughlings jackson described how a focus in the brain can start a seizure that can march along the motor strip producing a progression of seizure activity. This became known as the jacksonian march. A focal scar or lesion can set this off usually on the very outer surface of the frontal lobe of the brain.
Answered 8/12/2012
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3 doctors weighed in across 2 answers
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