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Related Experiment Videos

Spontaneous dissociation during functional MRI experiments.

Matthias Michal1, Christian Röder, Jutta Mayer

  • 1Clinic for Psychosomatic Medicine and Psychotherapy, University Frankfurt/M, Heinrich-Hoffmann Street 10, 60528 Frankfurt am Main, Germany. michal@em.uni-frankfurt.de

Journal of Psychiatric Research
|June 25, 2005
PubMed
Summary

Functional magnetic resonance imaging (fMRI) may cause significant dissociative responses in healthy individuals. Researchers recommend screening fMRI participants for dissociation due to its potential impact on mental functions.

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Area of Science:

  • Neuroscience
  • Psychology

Background:

  • Functional magnetic resonance imaging (fMRI) is a common neuroimaging technique.
  • Dissociative responses can impact cognitive and emotional functioning.

Purpose of the Study:

  • To investigate whether fMRI procedures elicit dissociative responses in healthy subjects.
  • To assess the prevalence and magnitude of dissociation during fMRI.

Main Methods:

  • Recruited 32 healthy participants for fMRI scans.
  • Measured trait and state dissociation levels before and during fMRI.

Main Results:

  • Over one-third of participants exhibited substantial dissociative responses.
  • Observed a large effect size (d=4.10) for dissociation during fMRI.

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  • Causal factors for these dissociative responses remain unclear.

    • Conclusions:

    • fMRI procedures may induce significant dissociation in a notable portion of individuals.
    • Screening for dissociation is recommended for participants in fMRI studies.
    • Further research is needed to understand the subjective experience of dissociation during fMRI.