abnormal forebrain morphology MP:0000783 MPheno.ontology abnormal prosencephalon morphology any structural anomaly of the anterior of the three primary divisions of the developing chordate brain or the corresponding part of the adult brain (in vertebrates, includes especially the cerebral hemispheres, the thalamus, and the hypothalamus and especially in higher vertebrates is the main control center for sensory and associative information processing, visceral functions, and voluntary motor functions) forebrain dysplasia abnormal brain morphology