Basal-corticofrontal circuits in schizophrenia and obsessive-compulsive disorder: A controlled, double dissociation study

Roberto Cavallaro, Paolo Cavedini, Pietro Mistretta, Tommaso Bassi, Sara Monica Angelone, Alessandro Ubbiali, Laura Bellodi

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Several lines of research suggest that prefrontal cortex dysfunctions observed in obsessive compulsive disorder (OCD) and schizophrenia (SKZ) are linked to two partially independent neuroanatomic systems: the ventromedial prefrontal cortex and the dorsolateral prefrontal cortex, with different neuroanatomic connections, including the striatum. The primary aim of this study was to test this hypothesis using a double dissociation study of neuropsychological tasks performance of the dorsolateral prefrontal cortex and ventromedial prefrontal cortex. Methods: We administered the Wisconsin Card Sorting Test, the Gambling Task, and the four-disk version of the Tower of Hanoi to 110 SKZ and 67 OCD patients and 56 control subjects. Results: A clear double dissociation of Wisconsin Card Sorting Test and Gambling Task performances was found, with SKZ patients performing the Wisconsin Card Sorting test significantly worse than OCD patients and control subjects and OCD patients performing the Gambling Task significantly worse than SKZ and control subjects. Both SKZ and OCD patients performed the Tower of Hanoi significantly worse than control subjects. Conclusions: Results from our double dissociation study confirm the hypothesis of involvement of different frontal lobe subsystems within basal-corticofrontal circuits function in SKZ and OCD.

Original languageEnglish
Pages (from-to)437-443
Number of pages7
JournalBiological Psychiatry
Volume54
Issue number4
DOIs
Publication statusPublished - Aug 15 2003

Keywords

  • Basal ganglia
  • Neuropsychological performance
  • Obsessive-compulsive disorder
  • Prefrontal cortex
  • Schizophrenia

ASJC Scopus subject areas

  • Biological Psychiatry

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