common carOtid arteries were occludd with clips to induce acute brain ischemia inwistar rats. Using this model

we observed and recorded the effect of brain ischemia onultrastructure of the brain and the regional cortical bloob flow

and the effect of electro-acupunc-ture of“Hogu”point.The main results were as follows:1. After 10 min of brain ischemia they appeared the alteraction of cellular structures of thebrain tissues

On electro-acupuncturing “Hegu” point

it could obviously decrease the degree of braincellular edema andema of its mitochondrion. Theresults make sure that clectro--acupuncture “Hegu ” point could improve brain funetion as it is indicated morphologically.2. After brain ischomia

the regional cortical blood flow decreased siginficantlly. Oncloctro-acupuncturing“Hogu”point

brain ischcmia can be recovered partly.Because of its quickonsot and short duration(about 6 min)

we assumod that the action of acupuncture may be related toneurorogulation

and the mechanism of improving brain function by electro-acupuncture may berelated to the increase of the regional cortical blood fiow.