Towards slime mould chemical sensor: Mapping chemical inputs onto electrical potential dynamics of Physarum Polycephalum

Whiting, James G. H.; de Lacy Costello, Ben P. J.; Adamatzky, Andrew

Abstract

Plasmodium of slime mould Physarum polycephalum is a large single celled organism visible unaided by the eye. This slime mould is capable of optimising the shape of its protoplasmic networks in spatial configurations of attractants and repellents. Such adaptive behaviour can interpreted as computation. When exposed to attractants and repellents, Physarum changes patterns of its electrical activity. We experimentally derived a unique one-to-one mapping between a range of selected bioactive chemicals and patterns of oscillations of the slime mould's extracellular electrical potential. This direct and rapid change demonstrates detection of these chemicals in a similar manner to a biological contactless chemical sensor. We believe results could be used in future designs of slime mould based chemical sensors and computers. © 2013 Elsevier B.V.

• Journal Article Type: Article
• Acceptance Date: Oct 14, 2013
• Online Publication Date: Oct 26, 2013
• Publication Date: Feb 1, 2014
• Deposit Date: Sep 23, 2016
• Publicly Available Date: Sep 23, 2016
• Journal: Sensors and Actuators, B: Chemical
• Print ISSN: 0925-4005
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 191
• Pages: 844-853
• DOI: https://doi.org/10.1016/j.snb.2013.10.064
• Keywords: physarum polycephalum, electrical activity, oscillations, biosensor
• Public URL: https://uwe-repository.worktribe.com/output/821699
• Publisher URL: http://dx.doi.org/10.1016/j.snb.2013.10.064
• Additional Information: Additional Information : The final publication is available at http://dx.doi.org/10.1016/j.snb.2013.10.064.
• Contract Date: Sep 23, 2016