Bilateral hemispheric activation in the early recovery of motor function after stroke

Stroke; a Journal of Cerebral Circulation
M SilvestriniG Bernardi

Abstract

Functional recovery after cerebral infarction is a complex phenomenon that depends on various factors. The aim of this study was to investigate changes in cerebral perfusion during motor activity in stroke patients with very early recovery of motor function. We included 9 consecutive patients hospitalized for acute-onset hemiparesis who showed complete functional recovery within 24 hours. CT of the brain showed an ischemic or hemorrhagic cerebral lesion in areas compatible with the symptomatology. Within 36 hours (range, 28 to 36) all patients were examined for the effects of a thumb-to-finger opposition task on cerebral blood flow in the middle cerebral arteries, evaluated by means of bilateral transcranial Doppler ultrasonography. Data were compared with those of 9 healthy subjects matched for age and sex. In patients, the evaluation was repeated 2 to 4 months later. A comparable increase in flow velocity (% mean+/-SD) was observed with respect to baseline in the contralateral middle cerebral artery during motor activity with patients' normal (8.8+/-2.0%) and recovered hand (9.7+/-4.1%) and with both hands of control subjects (10.6+/-1.4%). In the middle cerebral artery ipsilateral to the hand performing the motor task, the i...Continue Reading

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Citations

Aug 4, 2010·Experimental Brain Research·M BerlingeriE Paulesu
Aug 17, 2010·Experimental Brain Research·Alison L Smith, W Richard Staines
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