PI Name: Nicolas Cherbuin
Institution: Centre for Mental Health Research Australian National University


Over many decades researchers have been fascinated with the link between functional lateralization and the size of the corpus callosum (i.e., the largest commissure in the human brain, connecting the two hemispheres through more than 200 million fibers). The idea is that a stronger functional lateralization (where information is processed mainly in the dominant hemisphere) requires less inter-hemispheric communication via callosal fibers. Thus, as a consequence (and/or as a precursor) of this hemispheric specialization, callosal size might be decreased in more lateralized individuals.