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FIG 1. Patient 1, with schizencephaly and agenesis of the corpus callosum and an associated interhemispheric cyst. The ipsilateral activation index on the unaffected hemisphere is infinite.
A, Functional MR image (90/56; T1-weighted image [300/14/2]) shows the widespread and lower-lying activation areas adjacent to the central sulcus (arrow) during the right-hand motor task. Arrowheads indicate schizencephaly.
B, Functional MR image (90/56; T1-weighted image [300/14/2]) shows the activation area of the left-hand motor task located in the less-affected hemisphere.
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