The dynamic clamp is a novel method that uses computer simulation to i
ntroduce conductances into biological neurons. This method can be used
to study the role of various conductances in shaping the activity of
single neurons, or neurons within networks. The dynamic clamp can also
be used to form circuits from previously unconnected neurons. This ap
proach makes computer simulation in interactive experimental tool, and
will be useful in many applications where the role of synaptic streng
ths and intrinsic properties in neuronal and network dynamics is of in
terest