A novel theta-controlled vibrotactile brain–computer interface to treat chronic pain: a pilot study

Author:

Demarest Phillip,Rustamov Nabi,Swift James,Xie Tao,Adamek Markus,Cho Hohyun,Wilson Elizabeth,Han Zhuangyu,Belsten Alexander,Luczak Nicholas,Brunner Peter,Haroutounian Simon,Leuthardt Eric C.

Abstract

AbstractLimitations in chronic pain therapies necessitate novel interventions that are effective, accessible, and safe. Brain–computer interfaces (BCIs) provide a promising modality for targeting neuropathology underlying chronic pain by converting recorded neural activity into perceivable outputs. Recent evidence suggests that increased frontal theta power (4–7 Hz) reflects pain relief from chronic and acute pain. Further studies have suggested that vibrotactile stimulation decreases pain intensity in experimental and clinical models. This longitudinal, non-randomized, open-label pilot study's objective was to reinforce frontal theta activity in six patients with chronic upper extremity pain using a novel vibrotactile neurofeedback BCI system. Patients increased their BCI performance, reflecting thought-driven control of neurofeedback, and showed a significant decrease in pain severity (1.29 ± 0.25 MAD, p = 0.03, q = 0.05) and pain interference (1.79 ± 1.10 MAD p = 0.03, q = 0.05) scores without any adverse events. Pain relief significantly correlated with frontal theta modulation. These findings highlight the potential of BCI-mediated cortico-sensory coupling of frontal theta with vibrotactile stimulation for alleviating chronic pain.

Publisher

Springer Science and Business Media LLC

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