Cortical gray and white matter volume in unmedicated schizotypal and schizophrenia patients

Erin A. Hazlett, Monte S. Buchsbaum, M. Mehmet Haznedar, Randall Newmark, Kim E. Goldstein, Yuliya Zelmanova, Cathryn F. Glanton, Yuliya Torosjan, Antonia S. New, Jennifer N. Lo, Vivian Mitropoulou, Larry J. Siever

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


Magnetic resonance imaging (MRI) studies have revealed fronto-temporal cortical gray matter volume reductions in schizophrenia. However, to date studies have not examined whether age- and sex-matched unmedicated schizotypal personality disorder (SPD) patients share some or all of the structural brain-imaging characteristics of schizophrenia patients. We examined cortical gray/white matter volumes in a large sample of unmedicated schizophrenia-spectrum patients (n = 79 SPD, n = 57 schizophrenia) and 148 healthy controls. MRI images were reoriented to standard position parallel to the anterior-posterior commissure line, segmented into gray and white matter tissue types, and assigned to Brodmann areas (BAs) using a postmortem-histological atlas. Group differences in regional volume of gray and white matter in the BAs were examined with MANOVA. Schizophrenia patients had significantly reduced gray matter volume widely across the cortex but more marked in frontal and temporal lobes. SPD patients had reductions in the same regions but only about half that observed in schizophrenia and sparing in key regions including BA10. In schizophrenia, greater fronto-temporal volume loss was associated with greater negative symptom severity and in SPD, greater interpersonal and cognitive impairment. Overall, our findings suggest that increased prefrontal volume in BA10 and sparing of volume loss in temporal cortex (BAs 22 and 20) may be a protective factor in SPD which reduces vulnerability to psychosis.

Original languageEnglish
Pages (from-to)111-123
Number of pages13
JournalSchizophrenia Research
Issue number1-3
StatePublished - Apr 2008


  • Cingulate gyrus
  • Frontal lobe volume
  • Gray matter volume
  • MRI
  • Negative symptoms
  • Schizophrenia
  • Schizotypal personality disorder
  • Temporal lobe volume
  • White matter volume


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