Fig. 1.

Deliberate mixing of signals illustrates the ability of independent component analysis (ICA) to blindly find source signals in mixed and redundant data. Three original signals—2 intracellular recording traces from Tritonia pedal ganglion neurons (A and B) and one white noise trace (C)—were linearly mixed. The mixing coefficient applied to each of the original signals is shown above each of the mixed traces. ICA performed on this 3 detector data set returned 3 independent components that matched the original signals.