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1. Extra- and intracellular potentials were recorded from neurons and glia during spreading depression (SD) in cerebral cortex of cats. The glial membrane depolarized during SD and the time course of depolarization was concurrent with the surface DC change of SD. The glial depolarization evoked by 20-Hz repetitive cortical stimulation disappeared during the(More)
In this paper, we presented the 4.0, 2.7, 2.5 mm, width, length, height size biomimetics micro robot system which was inspired by insects. The micro robot system was made from silicon wafer fabricated by micro electro mechanical systems (MEMS) technology. The mechanical system of the robot was equipped with small size rotary type actuators, link mechanisms(More)
Pharmacological studies of the contraction induced by 15-hydroperoxyarachidonic acid (15-HPAA) were done in the isolated canine basilar artery. The maximal contractile force produced by 15-HPAA was 1.5 times that of serotonin and was equivalent to that of prostaglandin (PG) F2 alpha or PGA1. At concentrations in which reductions of [14C]-6-keto-PGF1 alpha(More)
Intracellular microelectrodes filled with either Lucifer Yellow CH, a highly florescent dye, or horseradish peroxidase (HRP) were used to electrophysiologically characterize and mark cells in the cerebral cortex of cat. Fifty-eight cells, characterized electrophysiologically as glia, were marked with Lucifer Yellow CH. All were identified as protoplasmic(More)
In order to investigate the role of Na+,K(+)-ATPase in the development of neuronal necrosis following cerebral ischemia, ischemia was induced in gerbils by occluding the common carotid artery unilaterally for 10 min. A time-course analysis revealed that significant reductions of the Na+,K(+)-ATPase activity in the cerebral cortex and hippocampus were(More)
The pharmacological mechanisms by which BY-1949, a novel dibenzoxazepine derivative, increases in regional cerebral blood flow, were investigated using the canine basilar artery in vitro. BY-1949 inhibited contractions elicited by serotonin (5-HT), prostaglandin (PG) F2 alpha, endothelin and phorbol-12,13-diacetate (PDA), respectively, to the same extent.(More)
The pharmacological and biochemical mechanisms of contractile responses to the protein kinase C (PKC) activator phorbol-12,13-diacetate (PDA) were investigated in canine basilar arteries. In the normal medium, PDA elicited a strong, dose-related, and slow-developing sustained contraction. Among the constrictors examined, including serotonin, prostaglandin(More)
In this paper, we will propose the neural networks integrated circuit (NNIC) which is the driving waveform generator of the 4.0, 2.7, 2.5 mm, width, length, height in size biomimetics microelectromechanical systems (MEMS) microrobot. The microrobot was made from silicon wafer fabricated by micro fabrication technology. The mechanical system of the robot was(More)
This paper discussed about development of quadruped robot which could perform the quadruped animal-like locomotion. Locomotion rhythm of the quadruped robot was generated using the pulse-type hardware neural networks (P-HNN). Quadruped robot had mechanical components and electrical components. The mechanical components of the quadruped robot consist of the(More)