  We stimulate mycelian networks of oyster fungi Pleurotus ostreatus with low
frequency sinusoidal electrical signals. We demonstrate that the fungal
networks can discriminate between frequencies in a fuzzy or threshold based
manner. Details about the mixing of frequencies by the mycelium networks are
provided. The results advance the novel field of fungal electronics and pave
ground for the design of living, fully recyclable, electron devices.
