Abnormal gyral complexity in first-episode schizophrenia

Katherine L. Narr, Robert M. Bilder, Sharon Kim, Paul M. Thompson, Philip Szeszko, Delbert Robinson, Eileen Luders, Arthur W. Toga

Research output: Contribution to journalArticlepeer-review

118 Scopus citations

Abstract

Background Abnormalities in the patterns and frequency of cortical folding might help identify temporal and regionally specific disturbances in normal neurodevelopmental processes that occur in association with schizophrenia. Few studies, however, have investigated gyral complexity in schizophrenia. Methods High-resolution magnetic resonance images were used to examine differences in gyral complexity, measured three-dimensionally in five separate hemispheric regions covering the entire cortical surface, in patients with first-episode schizophrenia (n = 50) compared with demographically matched healthy comparison subjects (n = 50). The modulating effects of gender and hemisphere were also examined. Results Significant increases in cortical folding were observed in the right superior frontal cortex in male schizophrenic patients compared with male control subjects, but not between female diagnostic groups. Significant main effects of hemisphere were found in frontal, parietal, and occipital regions in directions complementary to cerebral torques. Conclusions Results support previous findings of right frontal hypergyria in male schizophrenic patients and suggest that these abnormalities predate illness onset and are of neurodevelopmental origin. Therefore, in schizophrenia, sexually dimorphic developmental processes and differences in hemispheric connectivity, which have been shown to influence the organization and/or frequency of cortical folding, seem to be disturbed during gyral formation in utero.

Original languageEnglish
Pages (from-to)859-867
Number of pages9
JournalBiological Psychiatry
Volume55
Issue number8
DOIs
StatePublished - 15 Apr 2004
Externally publishedYes

Keywords

  • Complexity
  • Cortical folding
  • Fissurization
  • Gyrification
  • Magnetic resonance imaging
  • Neurodevelopment

Fingerprint

Dive into the research topics of 'Abnormal gyral complexity in first-episode schizophrenia'. Together they form a unique fingerprint.

Cite this