Transcallosal motor pathway from affected motor cortex to affected hand in a patient with corona radiata infarct A diffusion tensor tractography and transcranial magnetic stimulation study

Title
Transcallosal motor pathway from affected motor cortex to affected hand in a patient with corona radiata infarct A diffusion tensor tractography and transcranial magnetic stimulation study
Author(s)
장성호
Keywords
CORTICOSPINAL TRACT; STROKE; BRAIN; REORGANIZATION; RECOVERY; FIBERS; PROJECTIONS; MECHANISM; RESPONSES; LESIONS
Issue Date
201007
Publisher
SHENYANG EDITORIAL DEPT NEURAL REGENERATION RES
Citation
NEURAL REGENERATION RESEARCH, v.5, no.14, pp.1117 - 1120
Abstract
The mechanisms of motor recovery through the transcallosal pathway remain poorly understood. The present study reports on a hemiplegic patient with corona radiata infarct; it attempts to confirm motor recovery through the transcallosal motor pathway, from the affected motor cortex to the affected hand, using diffusion tensor tractography and transcranial magnetic stimulation. A 54-year-old, male patient and eight age-matched, normal subjects were enrolled in the study. The patient's right hand was initially completely paralyzed, but slowly recovered over 6 months. In the control subjects and the unaffected hemisphere (right) of the patient, the corticospinal tracts originated from the motor cortex and descended along the known corticospinal tract pathway. However, the corticospinal tract of the affected hemisphere was disrupted at the upper pons. Following transcranial stimulation of the affected (left) motor cortex, motor evoked potential from the affected (right) abductor pollicis brevis muscle exhibited longer latency than opposite motor evoked potential. Results from the present study suggest that motor function of the affected (right) hand recovered via the transcallosal motor pathway from the affected (left) motor cortex in this patient.
URI
http://hdl.handle.net/YU.REPOSITORY/23947http://dx.doi.org/10.3969/j.issn.1673-5374.2010.14.015
ISSN
1673-5374
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의과대학 > 재활의학교실 > Articles
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