Relationships Between Cerebral Perfusion and Electrical Activity in Man

  • L. Symon
  • F. Momma
Conference paper
Part of the Advances in Neurosurgery book series (NEURO, volume 15)


Flow thresholds for synaptic transmission have been demonstrated in basic studies in baboons (3, 4). In man, we have also found a threshold relationship between (a) prolongation of the central conduction time (CCT), defined as the time interval between the arrival of the impulse at the C2 level and at the somatosensory cortex, and (b) the hemispheric CBF measured by a simple two-channel system (6): at a flow value below 30 ml/100 g/min, CCT was significantly prolonged in proportion to the reduction in CBF.


Internal Carotid Artery Middle Cerebral Artery Middle Cerebral Artery Occlusion Intracranial Aneurysm Cortical Response 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • L. Symon
    • 1
  • F. Momma
    • 1
  1. 1.Gough-Cooper Department of Neurological SurgeryInstitute of NeurologyLondonEngland

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