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Propagation of electrical signals by fungi

Mayne, Richard; Roberts, Nic; Phillips, Neil; Weerasekera, Roshan; Adamatzky, Andrew

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Richard Mayne
Lecturer in Maths Supporting Science

Nic Roberts

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Dr Neil Phillips
Research Fellow in Fungal Analog Electronics


Living fungal mycelium networks are proven to have properties of memristors, capacitors and various sensors. To further progress our designs in fungal electronics we need to evaluate how electrical signals can be propagated through mycelium networks. We investigate the ability of mycelium-bound composites to convey electrical signals, thereby enabling the transmission of frequency-modulated information. Mycelium networks were found to reliably transfer signals with a recoverable frequency comparable to the input, in the 100 Hz to 10 000 Hz frequency range. Mycelial adaptive responses, such as tissue repair, may result in fragile connections, however. While the mean amplitude of output signals was not reproducible among replicate experiments exposed to the same input frequency, the variance across groups was highly consistent. Our work is supported by NARX modelling through which an approximate transfer function was derived. These findings advance the state of the art of using mycelium-bound composites in analogue electronics and unconventional computing.

Journal Article Type Article
Acceptance Date May 18, 2023
Online Publication Date May 29, 2023
Publication Date Jul 31, 2023
Deposit Date Aug 11, 2023
Publicly Available Date Aug 11, 2023
Journal BioSystems
Print ISSN 0303-2647
Electronic ISSN 1872-8324
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 229
Article Number 104933
Keywords Signalling, Harmonic information, Mycelium, Fungal materials, Data transfer, NARX
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