A Neural Dissociation within Language: Evidence that the Mental Dictionary Is Part of Declarative Memory, and that Grammatical Rules Are Processed by the Procedural System

@article{Ullman1997AND,
  title={A Neural Dissociation within Language: Evidence that the Mental Dictionary Is Part of Declarative Memory, and that Grammatical Rules Are Processed by the Procedural System},
  author={Michael T. Ullman and Suzanne Corkin and Marie Coppola and Gregory Hickok and John Growdon and Walter J. Koroshetz and Steven Pinker},
  journal={Journal of Cognitive Neuroscience},
  year={1997},
  volume={9},
  pages={266-276}
}
Language comprises a lexicon for storing words and a grammar for generating rule-governed forms. Evidence is presented that the lexicon is part of a temporal-parietalhnedial-temporal declarative memory system and that granlmatical rules are processed by a frontamasal-ganglia procedural system. Patients produced past tenses of regular and novel verbs (looked and plagged), which require an -ed-suffixation rule, and irregular verbs (dug), which are retrieved from memory. Word-finding difficulties… 
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