title: [Electrophysiological markers of middle cerebral artery blood flow velocity in healthy subjects].
abstract: OBJECTIVE
  to determine electrophysiological markers of middle cerebral artery blood flow velocity (BFV).
  
  
  METHODS
  transcranial Doppler registration of middle cerebral artery BFV and direct current (DC) potentials recording from surface of head were performed in 30 healthy volunteers. Analysis of correlation between the BFV and DC potentials was used.
  
  
  RESULTS
  significant correlation between BFV and DC potential characteristics was observed. The highest correlation was found between BFV in middle cerebral artery and the difference of DC potentials between central and temporal areas of head (r = 0,55; p = 0,003). These areas coincide with the location of middle cerebral artery and the correlation observed may be connected with streaming potential generated by the blood flow in middle cerebral artery. If electrode placement did not coincide with blood current, DC potentials and BFV were not correlated.
  
  
  CONCLUSIONS
  it is assumed that electrical field created BFV in middle cerebral artery may contribute to the generation of DC potentials registered from the head.
authors.forename: V F
authors.initials: VF
authors.lastname: Fokin
authors.forename: N V
authors.initials: NV
authors.lastname: Ponomareva
authors.forename: G I
authors.initials: GI
authors.lastname: Kuntsevich
mesh_terms: D000328:Adult; D000368:Aged; D002560:Cerebrovascular Circulation / Q000502:physiology*; D055724:Electrophysiological Phenomena / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging / Q000502:physiology*; D012016:Reference Values; D012039:Regional Blood Flow / Q000502:physiology*; D015203:Reproducibility of Results; D017585:Ultrasonography, Doppler, Transcranial / Q000379:methods; D055815:Young Adult