Anatomical and behavioral study of a case of asymptomatic callosal agenesis

This paper presents radiological and behavioral observations of a case of asymptomatic congenital agenesis of the corpus callosum. CT scan data indicated that a small portion of the corpus callosum might have been preserved, although this is difficult to demonstrate with the usual criteria. Nuclear magnetic resonance showed the small preserved portion on the sagittal plane. The results of the behavioral studies agree well with already published data: the agenesis of the callosum does not induce a split-brain syndrome but does cause slight motor disturbances, an improvement of the ipsilateral paths of control, and the development of extra-callosal interhemispheric pathways.