On the origin of focal motor epilepsy

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Abstract
The hypothesis was constructed that if focal motor epilepsy arose from cortical contusion occurring at birth, a close association between the hemisphere containing epileptogenic focuses and the pelvic side of head positioning at birth would be found. Patients were selected for the study that had recurrent convulsive seizures beginning in the 1st decade of life, had electroencephalograms which revealed epileptogenic discharges confined to or clearly dominant in one cerebral hemisphere, and had no obvious cause for seizures, such as brain tumor. The group of 113 patients included 61 with left hemisphere focuses, of which 41 were born with occiput positioned in the right and 21 in the left sides of the pelvis. Of the 52 patients with right hemisphere focuses, 44 were positioned occiput left and 8 right. Chi-square = 29.6; p was much less than 0.001. The hypothesis was confirmed.

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