title: Effect of thinking on intracranial blood flow velocities.
abstract: OBJECTIVE
  To determine the effect of thinking on intracranial blood flow velocities.
  
  
  METHODS
  Transcranial Doppler (TCD) was used to measure the blood flow velocities of the cerebral arteries, when 10 normal persons were at rest and during thinking.
  
  
  RESULTS
  The mean flow velocities (MFVs) of the cerebral arteries during thinking were significantly higher than those at rest, especially in the MCA and ACA. The MFVs were raised from between 10.3% to 14.3%.
  
  
  CONCLUSIONS
  Thinking can increase the blood flow velocities of cerebral arteries significantly.
authors.affiliation: Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, China. neurogxm@public.cs.hn.cn
authors.forename: F
authors.initials: F
authors.lastname: Tian
authors.forename: S
authors.initials: S
authors.lastname: Ouyang
authors.forename: Q
authors.initials: Q
authors.lastname: Yang
mesh_terms: D001783:Blood Flow Velocity; D002560:Cerebrovascular Circulation; D006801:Humans; D013850:Thinking / Q000502:physiology*