Fig. 2

Fungal skin response to mechanical and optical stimulation. a Exemplar recording of fungal skin electrical activity under tactile and optical stimulation. Moments of applying and removing a weight are shown as ‘W*’ and ‘Wo’ and switching light ON and OFF as ‘L*’ and ‘Lo’. b Exemplar response to mechanical stimulation. Moments of applying and removing a weight are shown as ‘W*’ and ‘Wo’. High-amplitude response is labelled ‘s’. This response is following by a train of spikes ‘r’. A response to the removal of the weight is labelled ‘p’. c Exemplar response of fungal skin to illumination, recorded on three pairs of differential electrodes. ‘L*’ indicates illumination is applied, ‘Lo’ illumination is switched off. d A train of spikes on the raised potential as a response to illumination