Table 1.

Characteristics of electrical potential spiking: number of spikes recorded, average interval between spikes and average amplitude of a spike.

species	no. spikes	interval (min)	amplitude (mV)
C. militaris	881	116	0.2
F. velutipes	958	102	0.3
S. commune	530	41	0.03
O. nidiformis	1117	92	0.007