BEHAVIOURAtypical interhemispheric communication in left-handed individualsIwabuchi, Sarina J.; Kirk, Ian J.Author Information Research Centre for Cognitive Neuroscience, Department of Psychology, University of Auckland, Auckland, New Zealand Correspondence to Sarina J. Iwabuchi, MSc, Department of Psychology, University of Auckland, Level 3, Human Sciences Building, 10 Symonds Street, Private Bag 92019, Auckland, New Zealand Tel: +64 9 373 7599 x88421; fax: +64 9 373 7450; e-mail: email@example.com Received 14 October 2008 accepted 17 October 2008 NeuroReport: January 28th, 2009 - Volume 20 - Issue 2 - p 166-169 doi: 10.1097/WNR.0b013e32831f1cbb Buy SDC Metrics Abstract The relative latencies of evoked electroencephalogram potentials to lateralized visual stimuli were used to calculate the interhemispheric transfer time (IHTT) in right-handed and left-handed males. We confirmed earlier observations of a directional asymmetry in right-handed males. That is, IHTT from the right to the left hemisphere is significantly shorter than from the left to the right. We showed for the first time, however, that this directional asymmetry is not seen in left-handed males. It is suggested that differences in the cytoarchitechtonics of the right and left hemisphere (differences that may result in lateralization of function per se) underlie the asymmetric IHTT in right handers, and that these differences are less pronounced in left handers. © 2009 Lippincott Williams & Wilkins, Inc.