SENSORY AND MOTOR SYSTEMSDouble decussated ipsilateral corticospinal tract in schizencephalyChang, Won Hyuka; Kim, Young-Buma; Ohn, Suk Hoonc; Park, Chang-hyuna; Kim, Sung Taeb; Kim, Yun-Heea Author Information Departments of aPhysical Medicine and Rehabilitation bDepartment of Diagnostic Radiology and Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul cDepartment of Physical Medicine and Rehabilitation, Hallym Sacred Heart Hospital, Hallym University School of Medicine, Anyangsi Donganku Pyungchondong, Kyounggido, Korea Correspondence to Dr Yun-Hee Kim, MD, PhD, Department of Physical Medicine and Rehabilitation, Division for Neurorehabilitation, Stroke and Cerebrovascular Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong, Gangnam-gu, Seoul 135-710, Korea Tel: +82 2 3410 2824/2818; fax: +82 2 3410 0052; e-mail: [email protected]; [email protected] Received 23 July 2009 accepted 27 July 2009 NeuroReport: October 28, 2009 - Volume 20 - Issue 16 - p 1434-1438 doi: 10.1097/WNR.0b013e328331483d Buy Metrics Abstract We report a patient with left hemiparesis because of schizencephaly affecting the right precentral gyrus and describe a double decussated ipsilateral corticospinal tract detected using the multimodal brain mapping technique. In this patient, we could observe that the unaffected primary motor cortex (M1) controls both hands by functional magnetic resonance imaging and motor-evoked potential study. We were also able to visualize the corticospinal tract originating from the unaffected M1 that passed through the internal capsule and cerebral peduncle on the same side. It then crossed over twice at the brain stem level to go down to the ipsilateral spinal cord. These findings show a unique pattern of brain reorganization in the recovery from early brain injury. © 2009 Lippincott Williams & Wilkins, Inc.