表象训练对脑血流速度的影响

Effect of Image Training on Cerebral Blood Flow Velocity

目的:探讨表象训练对脑血流速度(cerebral bloodflowvelocity,CBFV)的影响及性别对CBFV变化的影响。方法:在表象训练时及其先前的休息期,对20名正常大学生用经颅多普勒(TCD)监测其双侧大脑中动脉CBFV的变化。结果:与休息时相比,表象训练的相对变化值左侧为9.40±3.16,右侧为15.86±5.82,表象训练诱导出双侧大脑中动脉CBFV的非常显著增加(P<0.01)。表象训练的偏侧指数(LI)为24.73±14.48(P<0.01),呈现出显著的右侧半球偏侧化,性别对CBFV偏侧化不产生显著影响,但表象训练诱导的CBFV的增加在两性间有显著的差异(P<0.05)。结论:表象训练能引起双侧大脑中动脉CBFV的非常显著性增加,且可诱导CBFV的右侧偏侧化。

Objective： To investigate the effect of image training on cerebral blood flow velocity （CBFV） and to determine the influence of gender on the relative CBFV Changes. Methods： Simultaneous bilateral transcranial ultrasomography Doppler （TCD） monitoring of CBFV in the middle cerebral arteries （MCAs） is performed in 20 normal college students during image training and their preceding intervals. Results： Compared with its preceding intervals, the relative CBFV Changes of image training in the left hemisphere is 9.40 ± 3.16 and in the right is 15.86 ± 5.82. Image training induces a significant bilateral CBFV increase in the MCAs（p〈 0.01） and shows a significant right-hemisphere CBFV acceleration （The laterality index of image training is 24.73 ± 14.48）（p〈 0.01）. Gender has no influence on laterality, but higher relative CBFV changes is observed in the male group when image training is performed. Conclusion： Image training can induce a significant bilateral CBFV increase in the MCAs and may induce a significant right-hemisphere CBFV acceleration.