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大脑皮层自发的电位活动,称之为脑波;若给予身体以某种刺激,随后产生大脑电位活动的改变,称之为大脑诱发电位(cerebral evoked potential).在记录脑的电位活动中给予声响或闪光等刺激时,可产生非特异性和特异性两种诱发电位.前者是各种不同的刺激引起相同的反应,这种反应以顶部最明显,是一种普遍性暂时性的改变.如觉醒时给予声响刺激可引起α波的减弱或抑制,在睡眠期则引起K-综合波,有时为一串快波.特异性反应系在刺激后经恒定的潜伏期后在皮层区域所出现的反应.非特异性反应的电位变化较大,用肉眼即可观察,且早为人们所熟知.特异性的大脑诱发电位因其电
The spontaneous potential activity of the cerebral cortex, known as brainwave; if given to the body to some kind of stimulus, followed by changes in brain potential activity, called the brain evoked potential (cerebral evoked potential) in the recording of the brain potential activity to give sound Or flash and other stimuli, can produce non-specific and specific two kinds of evoked potentials.The former is caused by a variety of different stimuli the same response, the top of the reaction is the most obvious, is a universal temporary changes such as wakefulness Stimulation of the sonic stimulus may cause a decrease or inhibition of the alpha wave, which in the sleep induces a K-complex, sometimes a series of fast waves. The response of a specific reaction in the cortical area following a constant incubation period after stimulation. Non-specific reaction potential changes larger, can be observed with the naked eye, and as early as people know.Specific brain evoked potential due to its electricity