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The EEG-based local brain activity (LBA-) feedback training

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Check out this Knowledge Base article from StressTherapy Solutions: The EEG-based local brain activity (LBA-) feedback training.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Controlled study
Authors
Bauer H, Pllana A, Sailer U
Journal
Activitas Nervosa Superior Rediviva
Year
2011
Participants
10 healthy subjects (5 feedback, 5 sham)
Protocol
source-localized (LORETA) evoked-potential feedback
Sessions
7 sessions of 2 runs (120 items each)

Key findings

  • Feedback depended on a source being localized within a predefined region of training, using boundary element method-based simultaneous multiple sources LORETA
  • All 5 trained subjects increased both the frequency and intensity of feedback
  • The 5 sham controls (random feedback on 20% of items) showed no learning
  • Group differences were reported as statistically highly significant

This paper introduces EEG-based local brain activity (LBA) feedback, which uses source localization of single-trial evoked potentials so that feedback is given only when activity arises in a chosen brain region. In a screening experiment, 5 healthy volunteers trained over 7 sessions to strengthen left-hemisphere language-area activity during a covert action-naming task, while 5 controls received sham feedback. The trained group learned and the sham group did not; the authors see possible uses in rehabilitation, psychotherapy and cognitive training.