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New neurofeedback methods like 19-channel Z-score neurofeedback (ZNFB) and 3-D LORETA neurofeedback (LNFB) lack empirical validation. Current evidence does not support their superiority over standard protocols for ADHD and epilepsy treatment.

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Area of Science:

  • Neuroscience
  • Clinical Psychology
  • Biomedical Engineering

Background:

  • Standard neurofeedback protocols (theta/beta, slow cortical potentials, sensori-motor rhythm) are well-established for ADHD and epilepsy.
  • Emerging neurofeedback techniques, including 19-channel Z-score neurofeedback (ZNFB) and 3-D LORETA neurofeedback (LNFB), are being marketed as superior alternatives.

Purpose of the Study:

  • To critically review the empirical literature and assess the validity of claims regarding the efficacy and superiority of advanced neurofeedback methods (ZNFB and LNFB).

Main Methods:

  • A systematic literature search was conducted using PubMed and Google Scholar.
  • Included studies were peer-reviewed, group-based, and focused on clinical populations.
  • Studies from the ZNFB publication list were also incorporated.
  • Book chapters, magazine articles, and conference presentations were excluded.

Main Results:

  • Only six out of fifteen initially identified studies met the stringent inclusion criteria.
  • No empirical data supports the effectiveness or superiority of 19-channel Z-score neurofeedback (ZNFB).
  • Studies on 3-D LORETA neurofeedback (LNFB) were of higher quality, showing some potential efficacy for ADHD and tinnitus distress, but require replication and further investigation.

Conclusions:

  • Empirical validation for advanced neurofeedback techniques like ZNFB and LNFB is significantly lacking.
  • Current evidence does not substantiate claims of superiority for these novel approaches.
  • Further rigorous research is essential to establish the efficacy and clinical utility of ZNFB and LNFB.