The projection from the ventral posterior nucleus (VP) of the thalamus to the somatic sensory cortical area (SmI) in the rat was studied with the horseradish peroxidase (HRP) method.When injections were made into the anterior part of SmI (Brodmann 3), labeled cells were found in the ventral area of caudal VP. When injections were made into the posterior part of SmI (Brodmann 3,1), Iabeled cells were observed in the dorsal area of caudal VP. With injections located near the superior part of SmI (Brodmann 3), labeled cells were found in the lateral area of VP. When injections were made into the inferior part of SmI (Brodmann 2), labeled cells were seen in the medial area of VP.All labeled cells were observed in the injected side, indicating that the projection is uncrossed.Neurons in VP Projecting to Brodmann 2 is less than those projecting to Brodmann 3.Relationship between the quantity of labeled neurons and the amount of projection fibers was discussed.

273 spine apparatus were observed under electron microscope. The results were as follows: 1.The flat-type sac of 5 types of the sac which constituted the spine apparatus covered the majority. Most of them were arranged parallelly and a few dispersively. The horseshoe or braid shaped arrangement was also seen in some cases. 2.The number of the sac varied from 3 to 6 in most of the cases, and a few over 10. Sometimes 2 or 3 spine apparatus can be seen within a single dendritic spine. 3.The spine apparatus often locates in the dendritic spine. In some cases the spine apparatus can be seen within the dendrites or in the juncture of dendritic trunk and dendritic spine 4.The morphological structure of the dense bands is comparatively complex. Most of the bends are narrow, some are broad, fine granular or mist-like in shape. The dense bends are located in between the adjacent sacs mostly and in few cases on one side of the spine apparatus. In some cases, one end of the dense band is fused with the sac.

Objective: To evaluate the effect of parallel scalp acupuncture therapy on hemodynamic function of cerebral circulation in post-stroke patients. Methods: Twenty post-stroke patients were taken as our objects. The cerebral circulation indices before and after parallel acupuncture therapy, were detected with KF-3000 Brain Circulation Analyze, to compare the change of hemodynamics indexes before and after parallel scalp acupuncture. Results: After the therapy, minimum and mean blood velocity of carotid artery (Vmin and Vmean) increased significantly (P<0.001); peripheral resistance (Rc) decreased significantly (P<0.001). And the other indices had no significant differences. Conclusion: Parallel Scalp Acupuncture can improve the state of cerebrovascular autoregulation, raise the velocity of blood, decrease the peripheral resistance, and increase the steady energy, total energy and the ratio of kinetic energy to total energy, decrease the ratio of oscillatory kinetic energy to total kinetic energy.

The choroid plexus of the cat, rabbit and rat have been investigated by means of scanning elecron microscopy. The surface appearance of choroid plexus of these animals exhibited pleomorphism. The free surface of epithelial cells are covered with dense microvilli, single long cilium, clusters of cilia, bulbous protrusions and flower-like structure. They are scattered throughout the ventricular surface of the choroid plexus. High magnification scanning electron microscopy reveals that the population of microvilli consist of slender finger-like microvilli and microvilli with the bleb-like protrusion. Flower-like structure is the clusters of microvilli. On the surface of the choroid plexus of these animals, the Kolmer cells were observed. According to the number of processes, the Kolmer cells of cat, rabbit and rat may be divided into four main types. The ultra-architectural organization of choroid plexus of the cat, rabbit and rat is quite similar, but the number of bulbous protrusions in the cat and clusters of cilia in the rat occurs more.