COGNITIVE NEUROSCIENCE AND NEUROPSYCHOLOGYLateralization of movement-related potentials and the size of corpus callosumStančák, Andrej Jr1,3; Lücking, Carl H.2; Kristeva-Feige, Rumyana2Author Information 1Third Faculty of Medicine, Charles University, Department of Normal, Pathological and Clinical Physiology, Ke Karlovu 4, Prague, 120 00, Czech Republic 2Neurologic Clinic, Albert-Ludwigs University, Breisacher Str. 64, Freiburg, D-79106, Germany 3,1Corresponding Author and Address: Andrej Stančák, Jr, Third Faculty of Medicine, Charles University, Department of Normal, Pathological and Clinical Physiology, Ke Karlovu 4, Prague, 120 00, Czech Republic Received 2 November 1999; accepted 25 November 1999 Acknowledgements: This work was supported by the fellowships to A.S. (DAAD KZ.A9700261; DFG 436 TSE 17/2/98), by DFG (KR 1392/7-1) and GAČR (309/98/1065). We are grateful to Drs J. Huppertz, B. Feige and A. Schreiber, and to Mrs T. Ball and J. Dietterle for their help in various phases of the experiments. NeuroReport: February 7, 2000 - Volume 11 - Issue 2 - p 329-332 Buy Abstract Using structural MRI and whole-head EEG recordings, we analyzed the correlations between the anatomical parameters of the corpus callosum and the hemispheric distribution of the cortical movement-related potentials during right finger and shoulder movements in nine right-handed men. Statistically significant correlation was found only in finger movements. A relatively large genu and the anterior part of the truncus of the corpus callosum correlated with enhanced pre-movement EEG potential over the ipsilateral M1/S1 area. The lateralization of the movement-related potentials correlates with the size of those callosal regions which connect the homologous areas of the primary sensorimotor and frontal cortices. © 2000 Lippincott Williams & Wilkins, Inc.