The present work provides additional evidence for the occurrence of a number ofelectrogenic components in crustacean and particularly crayfish muscle fibers. Itdemonstrates that these different components are independent. One or another can beeliminated or modified by various procedures without affecting the rest. However,interactions can occur between the different components. The coupling may be effected bythe changes in membrane potential which result from changes in ionic permeabilities or bychanges in the membrane conductance. Some interactions of such couplings which can perturbelectrophysiological measurements are described and analyzed.
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