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病因病机正常人清醒时各种感觉器官接受外界与体内的感觉刺激,感觉冲动传至脑子中轴两旁的网状结构,再作用于整个大脑皮质,使人体处于醒觉状态。当罹患流行性乙型脑炎(乙脑)时,脑的灰质及白质均有充血及点状出血,并出现粟粒状半透明的软化灶,单个或聚集成簇,甚至融合成大片软化灶。脑实质的病变可引起脑水肿,并使大脑皮质处于抑制状态。此外,脑缺血、缺氧还可导致中枢神经系统兴奋
The etiology and pathogenesis of normal people awake when a variety of sensory organs to accept the feeling of stimulation of the outside world and the body, the feeling impulse spread to the brain axis network structure, and then the entire cerebral cortex, so that the human body in awoke. When suffering from Japanese encephalitis (JE), there is congestion and punctate bleeding in the gray matter and white matter of the brain, and miliary semitransparent softening lesions occur singly or in clusters, or even in large soft spots. Parenchymal brain lesions can cause brain edema, and the cerebral cortex in an inhibited state. In addition, cerebral ischemia, hypoxia can lead to central nervous system excitement