A preliminary study of increased amygdala activation to positive affective stimuli in mania

Felix Bermpohl, Umut Dalanay, Thorsten Kahnt, Bastian Sajonz, Hannah Heimann, Roland Ricken, Meline Stoy, Claudia Hägele, Florian Schlagenhauf, Mazda Adli, Jana Wrase, Andreas Ströhle, Andreas Heinz*, Michael Bauer

*Corresponding author for this work

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

Objectives: The present study in hypomanic and manic patients explored how amygdala responses to affective stimuli depend on the valence of the stimuli presented. Methods: We compared 10 patients with 10 matched healthy control subjects. We measured blood oxygen level-dependent (BOLD) responses in the amygdala while subjects passively viewed photographs taken from the International Affective Picture System. After the fMRI session, subjects saw the pictures again and subjectively rated the emotional valence and intensity of each picture. Results: Compared to healthy individuals, hypomanic or manic patients showed higher valence ratings in positive pictures and associated larger BOLD responses in the left amygdala during positive versus neutral picture viewing. This enhanced amygdala activation was correlated with Young Mania Rating Scale scores and with euphoric as opposed to irritable symptom presentation. Conclusions: Increased valence ratings and amygdala responses to positive affective stimuli may reflect a positive processing bias contributing to elevated mood states characteristic for euphoric mania.

Original languageEnglish (US)
Pages (from-to)70-75
Number of pages6
JournalBipolar Disorders
Volume11
Issue number1
DOIs
StatePublished - Jan 19 2009

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Keywords

  • Amygdala
  • Euphoria
  • Functional magnetic resonance imaging
  • Mania
  • Young Mania Rating Scale

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

Cite this

Bermpohl, F., Dalanay, U., Kahnt, T., Sajonz, B., Heimann, H., Ricken, R., Stoy, M., Hägele, C., Schlagenhauf, F., Adli, M., Wrase, J., Ströhle, A., Heinz, A., & Bauer, M. (2009). A preliminary study of increased amygdala activation to positive affective stimuli in mania. Bipolar Disorders, 11(1), 70-75. https://doi.org/10.1111/j.1399-5618.2008.00648.x