Steps toward developing an EEG biofeedback treatment for chronic pain.

Area of Science:

• Neuroscience
• Pain Management
• Rehabilitation Medicine

Background:

• Chronic pain is a prevalent and challenging issue for individuals with spinal cord injury (SCI).
• Existing analgesic treatments are often ineffective for SCI-related pain.
• Electroencephalography biofeedback (neurofeedback, NF) is an emerging therapeutic modality for refractory pain.

Purpose of the Study:

• To investigate the efficacy and effects of neurofeedback (NF) on chronic pain in individuals with SCI.
• To explore potential mechanisms of NF by examining changes in electroencephalography (EEG) activity.
• To assess the durability of NF treatment effects on pain and other functional outcomes.

Main Methods:

• A study involving 13 individuals with SCI and chronic pain.
• Participants underwent 12 NF sessions, comprising three different protocols in a randomized order.
• Pain intensity, unpleasantness, sleep quality, pain interference, fatigue, and EEG bandwidth activity were measured.

Main Results:

• All three NF protocols demonstrated similar immediate reductions in pain intensity.
• Participants reported modest, sustained decreases in worst pain and pain unpleasantness post-treatment.
• EEG changes were observed in theta (θ) and alpha (α) frequencies, correlating with training protocols.

Conclusions:

• Neurofeedback shows preliminary efficacy for treating refractory chronic pain associated with spinal cord injury.
• The findings support the potential of NF as a non-pharmacological treatment option for SCI pain.
• Further clinical research is warranted to confirm these preliminary findings and elucidate NF mechanisms.