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Startle-induced seizures associated with infantile hemiplegia: implication of the supplementary motor area Volume 7, issue 1, March 2005

Figure 1 Axial FLAIR and saggital T1 MR images demonstrating a large region of porencephaly in the distribution of the right middle cerebral artery, with preservation of the caudate head. Evidence of cortical malformation is seen, with abnormal thickening of the right frontal cortex.

Figure 2 Interictal EEG demonstrating frequent, right fronto-central spike and wave, with maximum negativity at FP2 (left).Magnetic source image showing a tight cluster of interictal MEG spike sources (white arrows) at the anterior margin of the porencephalic cyst in the right frontal region (right).