Weakly electric fish use phase and amplitude modulations of their electric
organ discharge to communicate and to capture prey (electrolocation). P-typ
e electroreceptors, also known as probability coders, on their skin can det
ect extremely weak signals. We analyse baseline firing characteristics of t
hese receptors from experimental data, and present mathematical models for
the firing activity of both bursting and non-bursting units. (C) 2001 Elsev
ier Science B.V. All rights reserved.