Key result
Chronic low back pain patients exhibited enhanced alpha relative power on EEG compared with healthy controls (P<0.050).
Why the study?
Data regarding common functional brain characteristics in various pain syndromes remain inconclusive, prompting assessment of functional brain changes using EEG in CLBP patients compared with healthy controls.
Does quantitative EEG power spectra analysis identify functional brain changes in patients with chronic low back pain compared to healthy controls?
Case-Control (n=60)
Does quantitative EEG power spectra analysis identify functional brain changes in patients with chronic low back pain compared to healthy controls?
p-value: p=< 0.050
Enhanced alpha relative power on EEG may serve as an objective marker for chronic low back pain, reflecting altered sensory information gating.
qEEG may detect functional brain changes in CLBP; hypothesis-generating and requires validation before clinical use.
Background: Quantitative electroencephalography (EEG) power spectra analysis was applied to assess brain activation during chronic pain. Although many studies have shown that there are some common characteristics among individuals suffering from various pain syndromes, the data remains inconclusive. The present study aimed to assess chronic low back pain (CLBP) based on functional brain changes with EEG in CLBP patients compared with healthy controls. Methods: Multichannel electroencephalogram data were recorded from 30 subjects with CLBP and 30 healthy controls under eye-open resting state conditions and active lumbar forward flexion, and their cortical oscillations were compared using electrode-level analysis. Data were analyzed using a pair t-test. Results: < 0.050). Conclusion: The enhanced alpha relative power in CLBP patients could be relevant to attenuating sensory information gating and excessive integration of pain-related information. Increased power at the EEG seems to be one of the clinical characteristics of individuals with CLBP. EEG can be a simple and objective tool for studying the mechanisms involved in chronic pain and identifying specific characteristics of CLBP patients.
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Bemani et al. (2023) conducted a case-control in Chronic low back pain (n=60). Chronic low back pain vs. Healthy controls was evaluated on Cortical oscillations (EEG power spectra) (p=< 0.050). Chronic low back pain patients exhibited enhanced alpha relative power on EEG compared with healthy controls (P<0.050).
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