Fig. 4

Recording of electrical activity of fungal skin. a Close-up texture detail of a fungal skin. b A photograph of electrodes inserted into the fungal skin. c Train of three low-frequency spikes, average width of spikes there is 1500 s, a distance between spike peaks is 3000 s and average amplitude is 0.2 mV. d Example of several train of high-frequency spikes. Each train \(T_{xy}=(A_{xy}, W_{xy}, P_{xy})\) is characterised by average amplitude of spikes \(A_{xy}\) mV, width of spikes \(W_{xy}\) sec and average distance between neighbouring spikes’ peaks \(P_{xy}\) sec: \(T_{ab}=(2.6, 245, 300)\), \(T_{cd}=(1.7, 160, 220)\), \(T_{ef}=(1.6, 340, 340)\), \(T_{gh}=(2.5, 240, 350)\), \(T_{ij}=(2.5, 220, 590)\), \(T_{kl}=(2.6, 290, 440)\)