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Arch Phys Med Rehabil · Jun 1997
Comparative Study Clinical TrialAn electroencephalographic study of imagined movement.
- J B Green, Y Bialy, E Sora, and R W Thatcher.
- Edward Hines, Jr., Veterans Affairs Hospital, Hines, IL 60141, USA.
- Arch Phys Med Rehabil. 1997 Jun 1; 78 (6): 578-81.
ObjectiveDetermine the generator sources for actual and imagined (simulated) movements of fingers and toes.DesignObservational.SettingElectroencephalography laboratory.SubjectsTen asymptomatic adult volunteers.Main Outcome MeasureComparison of cortical electrical fields and their dipole sources in actual and imagined movements.ResultsCortical electrical fields tend to be contralateral with actual movements and midline with imagined movements. Dipole sources of actual movements include a contralateral contribution from the frontal (primary motor) area. Sources of imagined movements are midline or ipsilateral.Conclusions(1) The motor networks underlying the generation of actual and imagined movements are different. (2) Imagined movements lack a primary motor area source, but involve medial and ipsilateral structures. (3) The effectiveness of imagined movements in rehabilitation may stem from activation of premotor or supplementary motor areas.
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