Regulation of a periodic motor program in C. elegans.

Abstract excerpt

A three-part motor program mediates a defecation every 45 sec in well-fed wild-type Caenorhabditis elegans. Individual worms maintain this 45 sec rhythm with an SD of about 3 sec. We present evidence that the defecation cycle is controlled by an endogenous clock, most likely a neuronal pattern generator. The phase of the behavioral rhythm can be reset like pattern generators in other animals. The rhythm was reset...

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