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        Towards a Slime Mould-FPGA Interface

        Richard Mayne,Michail-Antisthenis Tsompanas,Georgios Ch. Sirakoulis,Andrew Adamatzky 대한의용생체공학회 2015 Biomedical Engineering Letters (BMEL) Vol.5 No.1

        Purpose The plasmodium of slime mould Physarumpolycephalum is a multinucleate single celled organism whichbehaves as a living amorphous unconventional computingsubstrate. As an excitable, memristive cell that typicallyassumes a branching or stellate morphology, slime mould isa unique model organism that shares many key properties ofmammalian neurons. There are numerous studies that revealthe computing abilities of the plasmodium realized by theformation of tubular networks connecting points of interest. Recent research demonstrating typical responses in electricalbehaviour of the plasmodium to certain chemical and physicalstimuli has generated interest in creating an interface betweenP. polycephalum and digital logic, with the aim to performcomputational tasks with the resulting device. Methods Through a range of laboratory experiments, wemeasure plasmodial membrane potential via a non-invasivemethod and use this signal to interface the organism with adigital system. Results This digital system was demonstrated to performpredefined basic arithmetic operations and is implemented ina field-programmable gate array (FPGA). These basic arithmeticoperations, i.e. counting, addition, multiplying, use data thatwere derived by digital recognition of membrane potentialoscillation and are used here to make basic hybrid biologicalartificialsensing devices. Conclusions We present here a low-cost, energy efficientand highly adaptable platform for developing next-generationmachine-organism interfaces. These results are therefore applicable to a wide range of biological/medical and computing/electronics fields.

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