The electrical properties of metal microelectrodes
1968; Institute of Electrical and Electronics Engineers; Volume: 56; Issue: 6 Linguagem: Inglês
10.1109/proc.1968.6458
ISSN1558-2256
Autores Tópico(s)Neural dynamics and brain function
ResumoThe electrical properties of metal microelectrodes for single-unit recording are reviewed. An equivalent circuit is presented, the elements of which are discussed. The most important element is the electrolytic capacitor formed by the metal-electrolyte interface. Its value is about 0.2 pF/µ 2 at 1 kHz. The effects of exposed metallic area at the tip and platinization are described, and some consideration is given to problems peculiar to the operation of these electrodes in neural tissue.
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