Roĭtbak A I, Ocherashvili I V
Fiziol Zh SSSR Im I M Sechenova. 1987 Feb;73(2):277-83.
In anesthetized cats, a recording macroelectrode, a K+-sensitive microelectrode and a stimulating electrode were placed on the surface of the suprasylvian gyrus. As the duration or intensity of stimulus increased, the amplitude of K+-potential reflecting the changes in the extracellular concentration of K+ ions (delta [K+]o) was augmented, while the half time of decay decreased. delta [K+]o also increased when the number of stimuli increased. Repetitive tetanic stimulation resulted in impairment of the effect also in the case when [K+]o following the preceding stimulus, reached the initial level. K-potential started to decay in the course of prolonged tetanic stimulation; impairment of the neuronal activity is supposed to underlie this event.
在麻醉猫的大脑上薛氏回表面放置记录宏电极、钾离子敏感微电极和刺激电极。随着刺激持续时间或强度增加，反映细胞外钾离子浓度变化（δ[K⁺]ₒ）的钾离子电位幅度增大，而衰减半衰期缩短。刺激次数增加时，δ[K⁺]ₒ也增加。在前一个刺激后的[K⁺]ₒ达到初始水平的情况下，重复强直刺激也会导致效应受损。在长时间强直刺激过程中，钾离子电位开始衰减；据推测，神经元活动受损是这一现象的基础。
