The mirror neuron system under hypnosis - Brain substrates of voluntary and involuntary motor activation in hypnotic paralysis

作者：Burgmer Markus^*; Kugel Harald; Pfleiderer Bettina; Ewert Adrianna; Lenzen Thomas; Pioch Regina; Pyka Martin; Sommer Jens; Arolt Volker; Heuft Gereon; Konrad Carsten

来源：Cortex, 2013, 49(2): 437-445.

DOI：10.1016/j.cortex.2012.05.023

• Hypnosis
• Paralysis
• Motor system
• Mirror neuron
• Functional imaging

Introduction: The neurobiological basis of non-organic movement impairments is still unknown. As conversion disorder and hypnotic states share many characteristics, we applied an experimental design established in conversion disorder to investigate hypnotic paralysis. %26lt;br%26gt;Methods: Movement imitation and observation were investigated by functional magnetic resonance imaging (fMRI) in 19 healthy subjects with and without hypnotically induced paralysis of their left hand. Paralysis-specific activation changes were explored in a multivariate model and functional interdependencies of brain regions by connectivity analysis. %26lt;br%26gt;Results: Hypnotic paralysis during movement imitation induced hypoactivation of the contralateral sensorimotor cortex (SMC) and ipsilateral cerebellum and increased activation of anterior cingulate cortex (ACC), frontal gyrus and insula. No paralysis-specific effects were revealed during movement observation. %26lt;br%26gt;Conclusions: Hyperactivation of ACC, middle frontal gyms (MFG), and insula might reflect attention (MFG), conflict-detection (ACC) and self-representation processes (insula) during hypnotic paralysis. The lack of effects in movement observation suggests that early motor processes are not disturbed due to the transient nature of the hypnotic impairment.

• 出版日期2013-2