Neural correlates of movement generation in the 'at-risk mental state'

Matthew R. Broome*, P. Matthiasson, P. Fusar-Poli, James B. Woolley, L. C. Johns, Paul Tabraham, Elvira Bramon, L. Valmaggia, S. C. R. Williams, Michael J. Brammer, X. Chitnis, P. K. McGuire

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Web of Science)

Abstract

Objective: People with 'prodromal' symptoms have a very high risk of developing psychosis. We examined the neurocognitive basis of this vulnerability by using functional MRI to study subjects with an at-risk mental state (ARMS) while they performed a random movement generation task. Method: Cross-sectional comparison of individuals with an ARMS (n = 17), patients with first episode schizophreniform psychosis (n = 10) and healthy volunteers (n = 15). Subjects were studied using functional MRI while they performed a random movement generation paradigm. Results: During random movement generation, the ARMS group showed less activation in the left inferior parietal cortex than controls, but greater activation than in the first episode group. Conclusion: The ARMS is associated with abnormalities of regional brain function that are qualitatively similar to those in patients who have recently presented with psychosis but less severe.
Original languageEnglish
Pages (from-to)295-301
JournalActa Psychiatrica Scandinavica
Volume122
Issue number4
DOIs
Publication statusPublished - Oct 2010

Keywords

  • psychosis
  • schizophrenia
  • imaging
  • motor
  • fMRI

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