English: "Photographs of pairs of differential electrodes inserted in (a) C. militaris, the block of a substrate colonized by the fungi was removed from the plastic container to make a photo after the experiments, (b) S. commune, the twig with the fungi was removed from the humid plastic container to make a photo after the experiment, (c) F. velutipes, the container was kept sealed and electrodes pierced through the lid." From the study "Language of fungi derived from their electrical spiking activity"