换一批
换一批摘要目的评价思维活动对脑动脉血流速度的影响.方法经颅多普勒检测10例正常人大脑思维活动前、后大脑中动脉、大脑前动脉和大脑后动脉的血流速度.结果大脑思维活动后各动脉血流速度对称性增加,增加范围10.3%～14.3%,其中以颈内动脉系统血流速度增加明显.结论思维活动能明显增加脑动脉血流速度.
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abstractsObjective 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.
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