The Neurocognitive Signature of Psychotic Bipolar Disorder

David C. Glahn, Carrie E. Bearden, Marcela Barguil, Jennifer Barrett, Abraham Reichenberg, Charles L. Bowden, Jair C. Soares, Dawn I. Velligan

Research output: Contribution to journalArticle

188 Scopus citations

Abstract

Background: Psychotic bipolar disorder may represent a neurobiologically distinct subgroup of bipolar affective illness. We sought to ascertain the profile of cognitive impairment in patients with bipolar disorder and to determine whether a distinct profile of cognitive deficits characterizes bipolar patients with a history of psychosis. Methods: Sixty-nine outpatients with bipolar I disorder (34 with a history of psychotic symptoms and 35 with no history of psychosis) and 35 healthy comparison subjects underwent a comprehensive neurocognitive battery. All three groups were demographically matched. Results: Despite preserved general intellectual function, bipolar I patients overall showed moderate impairments on tests of episodic memory and specific executive measures (average effect size = .58), and moderate to severe deficits on attentional and processing speed tasks (average effect size = .82). Bipolar I patients with a history of psychosis were impaired on measures of executive functioning and spatial working memory compared with bipolar patients without history of psychosis. Conclusions: Psychotic bipolar disorder was associated with differential impairment on tasks requiring frontal/executive processing, suggesting that psychotic symptoms may have neural correlates that are at least partially independent of those associated with bipolar I disorder more generally. However, deficits in attention, psychomotor speed, and memory appear to be part of the broader disease phenotype in patients with bipolar disorder.

Original languageEnglish (US)
Pages (from-to)910-916
Number of pages7
JournalBiological Psychiatry
Volume62
Issue number8
DOIs
StatePublished - Oct 15 2007

Keywords

  • Bipolar disorder
  • cognition
  • executive functioning
  • neuropsychology
  • psychosis
  • working memory

ASJC Scopus subject areas

  • Biological Psychiatry

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  • Cite this

    Glahn, D. C., Bearden, C. E., Barguil, M., Barrett, J., Reichenberg, A., Bowden, C. L., Soares, J. C., & Velligan, D. I. (2007). The Neurocognitive Signature of Psychotic Bipolar Disorder. Biological Psychiatry, 62(8), 910-916. https://doi.org/10.1016/j.biopsych.2007.02.001