Abstract
Recently, BCI(Brain computer interface) has been come into the research limelight. We have been investigating action potentials of rat hippocampal neurons cultured on a dish with 64 micro planer electrodes. However, we don't exactly comprehend logicality in micro planer electrodes. In this paper, we analyze logicality in three electrodes using fuzzy operator consisting of t-norm operator and t-conorm operator, and discuss logicality in cultured neuronal network.