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Individualized rTMS Treatment for Depression using an fMRI-Based Targeting Method
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Identifying patients with therapy-resistant depression by using factor analysis.

K Andreasson1, V Liest, M Lunde

  • 1Psychiatric Research Unit, Frederiksborg General Hospital, Hillerød, Denmark.

Pharmacopsychiatry
|September 8, 2010
PubMed
Summary
This summary is machine-generated.

This study identified a two-factor structure for treatment-resistant depression, showing that repetitive transcranial magnetic stimulation (rTMS) and transcranial pulsed electromagnetic fields (T-PEMF) significantly improved treatment-resistant symptoms compared to sham treatments.

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MRI-guided dmPFC-rTMS as a Treatment for Treatment-resistant Major Depressive Disorder
08:20

MRI-guided dmPFC-rTMS as a Treatment for Treatment-resistant Major Depressive Disorder

Published on: August 11, 2015

Area of Science:

  • Neuroscience
  • Psychiatry
  • Clinical Psychology

Background:

  • Identifying the factor structure of treatment-resistant depression (TRD) has been challenging.
  • Limited research exists on the underlying dimensions of TRD.

Purpose of the Study:

  • To identify the factor structure of treatment-resistant depression.
  • To analyze the efficacy of neuromodulation techniques in TRD.

Main Methods:

  • Principal component analysis was applied to baseline data from three add-on studies.
  • Two studies utilized repetitive transcranial magnetic stimulation (rTMS), and one used transcranial pulsed electromagnetic fields (T-PEMF).
  • Relative treatment effect was measured as the percentage of improvement.

Main Results:

  • Two major factors were identified: a general factor and a dual factor.
  • The dual factor comprised a depression subscale and a treatment resistance subscale.
  • Active treatment showed a 40% improvement in the treatment resistance subscale versus 17-30% for sham treatments.

Conclusions:

  • A distinct factor structure can describe patients with therapy-resistant depression.
  • Both rTMS and T-PEMF demonstrated a clinical effect on factor-derived scales compared to sham interventions.
  • Neuromodulation offers a potential therapeutic avenue for TRD.