PROBLEM TO BE SOLVED: To provide a multi-channel electrode capable of electrically stimulating or electrically measuring an arbitrary point of a site such as the brain and the heart while optically measuring or observing a function of the three-dimensional site such as the brain and the heart.SOLUTION: This in-situ multi-channel electrode 1 for living bodies is provided with a transparent conductor layer 3 and a transparent insulator layer 4 at a concave curve side of the transparent board 2 which has a plane at one plane face and the concave curve at the other face, and is characterized in that the conductor layer 3 is divided into a plurality of zones as mutually separate and independent regions on the concave curve, and a part of each region is extended toward the concave curve-side circumference part to be served as a leading line, and an insulator layer 4 is formed by covering a part other than pinhole portions 10 functioned as the electrodes.COPYRIGHT: (C)2009,JPO&INPIT【課題】脳や心臓などの立体的部位の機能を光学的に測定あるいは観察しつつ、当該部位の任意の点の電気的刺激または電気的測定を可能とする多点電極を提供すること。【解決手段】 一方の面が平面であり他方の面が凹曲面である透明基板2の凹曲面側に透明導電体層3と透明絶縁体層4とを設けたin situ状態での生体用の多点電極であって、導電体層3は、凹曲面上で互いに分離独立した領域として複数区画しつつそれぞれの領域の一部を凹曲面側周部まで延伸して導出線とし、絶縁体層4は電極として機能するピンホール部10以外を被覆することにより形成したことを特徴とする多点電極1。【選択図】図1