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[Biofeedback of slow brain potentials].

A Kisil1, N Birbaumer

  • 1Technische Universität Wroclaw, Polen.

Zeitschrift Fur Experimentelle Und Angewandte Psychologie
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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A new biofeedback system enables individuals to self-regulate slow cortical potentials (SCPs), which are brain indicators linked to attention and motor control. This portable device allows users to voluntarily control brain activity after just three sessions.

Area of Science:

  • Neuroscience
  • Neurophysiology

Context:

  • Slow cortical potentials (SCPs) are neurophysiological indicators of cortical excitability.
  • SCPs are behaviorally correlated with attention and motor preparation.

Purpose:

  • To develop and evaluate a portable biofeedback system for self-regulation of slow cortical potentials (SCPs).
  • To compare three algorithms for transforming SCP signals into feedback signals.

Summary:

  • A portable, PC-based system for on-line visual feedback of filtered and corrected slow brain potentials was developed.
  • In a controlled study, subjects utilized an optimal feedback method to voluntarily produce cortical positivity and negativity.
  • Participants achieved control over brain activity, including increases and decreases in negativity up to 20 microV, after three sessions.

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Impact:

  • A simple, portable PC-based device for clinical application of SCP biofeedback is now available.
  • This technology offers a new avenue for neurofeedback interventions targeting attention and motor control.