neuromodulatory approaches
Research Papers
Protocol for a Pilot Randomized Sham-Controlled Clinical Trial Evaluating the Feasibility, Safety, and Acceptability of Infraslow Electroencephalography Neurofeedback Training on Experimental and Clinical Pain Outcomes in People with Chronic Painful Knee
Introduction: Persistent pain is a significant contributor to disability in people living with knee osteoarthritis (KOA). Brain imaging, including electrophysiological studies, confirms altered cortical oscillatory and synchrony patterns in cognitive, affective, and somatosensory areas in individuals with KOA pain. Electroencephalography neurofeedback (EEG-NF) training is a form of neuromodulatory intervention that can help to reduce pain via normalizing dysrhythmic cortical oscillatory patterns that are linked to the pain experience. However, there is a dearth of evidence towards the efficacy of NF in individuals with musculoskeletal pain. Aim: The proposed research is intended to pilot the NF training protocol and assess the feasibility, safety, and acceptability of NF training in individuals with KOA and estimate the variability of experimental and clinical outcome measures following NF training. Design: A parallel, two-armed, double-blind (participant and assessor) pilot randomized sham-controlled clinical trial. Methods: Adults aged 44-75 years with a clinical diagnosis of KOA will be recruited and randomized to either active or sham EEG-NF training. Both groups will receive auditory feedback as a reward for achieving a predetermined activity threshold of the target areas of the brain. Outcome measures include feasibility measures (recruitment, randomization, retention, and dropout rates), acceptability, and adverse events; clinical measures (pain, interference, sleep, mood, and physical activity); and experimental pain outcomes (quantitative sensory testing procedures). Discussion: Outcomes from this study will inform the feasibility and methodology for a future randomized controlled clinical trial.
View Full Paper →Neuromodulatory Approaches for Chronic Pain Management: Research Findings and Clinical Implications
Two lines of evidence provide preliminary support for the role that brain state, measured via electroencephalogram (EEG), may play in chronic pain. First, research has identified a link between brain EEG activity and the experience of pain. Second, there are a number of published studies documenting the beneficial effects of interventions that impact the cortical activity associated with chronic pain. These interventions include neurobehavioral treatments such as neurofeedback and hypnosis as well as invasive and non-invasive brain stimulation. Preliminary data showing the efficacy of neuromodulatory strategies for treating pain provides compelling reason to examine how cortical activity (as measured by EEG) may underlie the experience of pain. Existing data already suggest specific approaches that neurofeedback clinicians might consider when treating patients with chronic pain. Reciprocally, observations by neurofeedback practitioners could provide important case data that could foster the design of more definitive randomized clinical trials using such strategies for the treatment of chronic pain.
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