Abstract

Actions, like words, must be ordered into coordinated sequences. Action “syntax rules” exist for natural behavior such as gooming in rats. One rule produces a highly stereotyped chain of grooming actions. We report that the loss of intrinsic neurons from the corpus striatum, after injections of neurotoxic kainic acid, disrupts execution of this syntactic chain while preserving component actions. Striatopallidal circuitry may contribute to the effective serial organization even of natural action into certain centrally generated sequential patterns.

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