Rimbert Sébastien, Zaepffel Manuel, Riff Pierre, Adam Perrine, Bougrain Laurent
Université de Lorraine, CNRS, Inria, LORIA, Nancy, France.
Independent Researcher, Dambach-la-ville, France.
Front Psychol. 2019 Oct 22;10:2341. doi: 10.3389/fpsyg.2019.02341. eCollection 2019.
Hypnosis techniques are currently used in the medical field and directly influences the patient's state of relaxation, perception of the body, and its visual imagination. There is evidence to suggest that a hypnotic state may help patients to better achieve tasks of motor imagination, which is central in the rehabilitation protocols after a stroke. However, the hypnosis techniques could also alter activity in the motor cortex. To the best of our knowledge, the impact of hypnosis on the EEG signal during a movement or an imagined movement is poorly investigated. In particular, how event-related desynchronization (ERD) and event-related synchronization (ERS) patterns would be modulated for different motor tasks may provide a better understanding of the potential benefits of hypnosis for stroke rehabilitation. To investigate this purpose, we recorded EEG signals from 23 healthy volunteers who performed real movements and motor imageries in a closed eye condition. Our results suggest that the state of hypnosis changes the sensorimotor beta rhythm during the ERD phase but maintains the ERS phase in the mu and beta frequency band, suggesting a different activation of the motor cortex in a hypnotized state.
催眠技术目前在医学领域得到应用，并且直接影响患者的放松状态、身体感知及其视觉想象。有证据表明，催眠状态可能有助于患者更好地完成运动想象任务，这在中风后的康复方案中至关重要。然而，催眠技术也可能改变运动皮层的活动。据我们所知，在运动或想象运动期间，催眠对脑电图信号的影响研究较少。特别是，不同运动任务中事件相关去同步化（ERD）和事件相关同步化（ERS）模式将如何被调节，可能有助于更好地理解催眠对中风康复的潜在益处。为了研究这一目的，我们记录了23名健康志愿者在闭眼状态下进行实际运动和运动想象时的脑电图信号。我们的结果表明，催眠状态在ERD阶段改变感觉运动β节律，但在μ和β频段维持ERS阶段，这表明在催眠状态下运动皮层的激活方式有所不同。
