抄録
In order to measure the mutual activity among any localized group of neurons, we have developed a magnetically coupled multimicroelectrode system, in which a permanently magnetized Pt-Co alloy was used as an electrode material. In this paper, we aim at developing a glass micropipette electrode coated with Ni ferromagnetic thin film, so that glass capillary electrodes may also be made available under the same multimicroelectrode system for purposes of intracellular recording and cell staining.
This paper sets forth the architecture of a newly developed glass electrode, fabrication techniques of Ni film, evaluation of film characteristics, optimal heat treatment condition of deposited film, and electrical properties between electrodes. Furthermore, the practicability is demonstrated by simultaneous recording of neural potentials from closely spaced neurons.
