• Pain Med · Dec 2013

    Patients with persistent pain after breast cancer treatment show enhanced alpha activity in spontaneous EEG.

    • Emanuel N van den Broeke, Oliver H G Wilder-Smith, Harry van Goor, Kris C P Vissers, and Clementina M van Rijn.
    • Donders Institute for Brain, Cognition and Behavior, Radboud University Nijmegen, Nijmegen, The Netherlands.
    • Pain Med. 2013 Dec 1;14(12):1893-9.

    ObjectiveThe aim of the present study was to investigate whether patients with persistent pain after breast cancer treatment show an enhanced and slowed dominant alpha activity in their electroencephalogram (EEG) recorded during rest in comparison with patients that also had undergone breast cancer treatment but do not have pain.MethodsThe spontaneous EEG was recorded during rest and before painful stimulation of the calf and analyzed with spectral analysis (Fast Fourier Transformation). Outcome measures, i.e., alpha indices (center of gravity and overall amplitude), were statistically tested between patients with and without persistent pain.ResultsIn comparison with patients without pain, patients with persistent pain after breast cancer treatment show more alpha activity in their spontaneous EEG observed from parietal-occipital brain regions.ConclusionPersistent pain after breast cancer treatment affects spontaneous brain activity, which might influence cognitive functioning.Wiley Periodicals, Inc.

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