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 $T_{\mathit{xy}}=(A_{\mathit{xy}},W_{\mathit{xy}},P_{\mathit{xy}})$ is characterised by average amplitude of spikes $A_{\mathit{xy}}$ mV, width of spikes $W_{\mathit{xy}}$ sec and average distance between neighbouring spikes’ peaks $P_{\mathit{xy}}$ sec: $T_{\mathit{ab}}=(2.6,245,300)$, $T_{\mathit{cd}}=(1.7,160,220)$, $T_{\mathit{ef}}=(1.6,340,340)$, $T_{\mathit{gh}}=(2.5,240,350)$, $T_{\mathit{ij}}=(2.5,220,590)$, $T_{\mathit{kl}}=(2.6,290,440)$