Otto C, Kalmring K, Lorenzen S, Sippel M
Biol Cybern. 1983;49(1):63-7. doi: 10.1007/BF00336929.
Extracellular single unit recordings with glass microelectrodes in the central nervous system of insects display action potentials of variable amplitude, polarity and time course. This phenomenon is due to capacitive influences at the electrode in contact with the tissue. This is demonstrated by an electrical model circuit simulating extracellular recording conditions. Extracellularly recorded potentials often are very similar to intracellularly recorded ones. Criteria for the decision whether the electrode is intracellularly or not are discussed. Action potentials and slow potentials were recorded simultaneously in the acoustic neuropiles of Locusta. Since slow potentials may not only be distorted by capacitive properties of both the tissue and the electrode, but also are influenced by the anatomical organization of the nervous tissue, their interpretation is ambiguous.
用玻璃微电极在昆虫中枢神经系统中进行的细胞外单单位记录显示出幅度、极性和时程可变的动作电位。这种现象是由于与组织接触的电极处的电容性影响。这通过模拟细胞外记录条件的电模型电路得到了证明。细胞外记录的电位通常与细胞内记录的电位非常相似。讨论了判断电极是否在细胞内的标准。在飞蝗的听神经纤维网中同时记录了动作电位和慢电位。由于慢电位不仅可能被组织和电极的电容特性所扭曲，还受到神经组织解剖结构的影响，因此对它们的解释并不明确。
