Irradiation of Voluntary Activity to the Contralateral Side in Movements of Normal Subjects and Patients with Central Motor Disturbances

Authors:
  • HHH.C. Hopf
    H.C. Hopf
  • HSH.J. Schlegel
    H.J. Schlegel
  • KLK. Lowitzsch
    K. Lowitzsch
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Abstract
The motor irradiation to muscles of the contralateral side after movements of the normal and the disabled arm was investigated in controls and in hemiparetic patients. It was found that the latency of the irradiating response was shorter when the paretic arm was moved and longer with movements of the normal arm. The difference in latency was significant and can be used as a sign for localizing cerebral lesions involving one single hemisphere. The significance of our findings in respect to cerebral dominance is discussed.