Word production deficits in schizophrenia

Cherie L. Marvel, Barbara L. Schwartz, Keren L. Isaacs

Research output: Contribution to journalArticle

Abstract

Fronto-cerebellar circuitry is implicated in word production. Data suggest that the cerebellum is involved in word search, whereas the prefrontal cortex underlies the selection of words from among competing alternatives. We explored the role of search and selection processes in word production deficits in schizophrenia patients. In Experiment 1, patients were impaired in a verb generation task under both high and low selection conditions but were more impaired in the high selection condition. In Experiment 2, when the difficulty level of search and selection conditions was equated in a word stem completion task, patients were only impaired in the search condition. Word search deficits underlie word production problems in schizophrenia, and may involve fronto-cerebellar dysfunction.

Original languageEnglish (US)
Pages (from-to)182-191
Number of pages10
JournalBrain and Language
Volume89
Issue number1
DOIs
StatePublished - Apr 1 2004
Externally publishedYes

Keywords

  • Cerebellum
  • Frontal lobe
  • Language
  • Schizophrenia
  • Search
  • Selection
  • Stem completion
  • Verb generation
  • Word production

ASJC Scopus subject areas

  • Language and Linguistics
  • Experimental and Cognitive Psychology
  • Linguistics and Language
  • Cognitive Neuroscience
  • Speech and Hearing

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