Mondo Description A developmental brain abnormality characterized by atypical migration of neurons during cortical development.

Uniprot Description SBH is a mild brain malformation of the lissencephaly spectrum. It is characterized by bilateral and symmetric plates or bands of gray matter found in the central white matter between the cortex and cerebral ventricles, cerebral convolutions usually appearing normal.

Disease Ontology Description A congenital nervous system abnormality characterized by migration of neurons to ectopic locations in the brain where the neurons form areas that appear as band-like clusters of white tissue underneath the gray tissue of the cerebral cortex.