Exploring neurofeedback as a therapeutic intervention for subjective cognitive decline

Area of Science:

• Neuroscience
• Cognitive Science
• Biomedical Engineering

Background:

• Subjective cognitive decline (SCD) is a growing concern in aging populations.
• Neurofeedback (NFB) is a brain-computer interface technique explored for neurological and psychological conditions.
• The efficacy of NFB for early intervention in SCD requires further investigation.

Purpose of the Study:

• To evaluate the efficacy of individualized NFB training versus standard NFB protocols for cognitive function in aging adults with SCD.
• To analyze the modulatory effects of NFB on electroencephalographic (EEG) frequencies.
• To investigate personalized NFB approaches tailored to individual EEG profiles.

Main Methods:

• Comparison of individualized NFB training with a standard protocol targeting alpha frequency power.
• Inclusion of a criterion for learning success and a non-learner group.
• Analysis of high-density EEG signals pre- and post-training, alongside questionnaire assessments.

Main Results:

• Individuals with SCD could modulate EEG signal power and duration at various frequencies, not just the target.
• No significant alterations in EEG signal power were observed between pre- and post-NFB training.
• Questionnaire scores showed no significant improvement after NFB training.

Conclusions:

• Individualized NFB training did not demonstrate superior efficacy compared to standard protocols for improving cognitive function in individuals with SCD.
• NFB did not significantly alter EEG signal power in participants with SCD.
• Current NFB protocols may not be effective for addressing subjective cognitive decline in aging populations.