Illusory sensation of movement induced by repetitive transcranial magnetic stimulation

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Dokumenter

Mark Schram Christensen, Jesper Lundbye-Jensen, Michael James Grey, Alexandra Damgaard Vejlby, Bo Belhage, Jens Bo Nielsen, Mark Schram Christensen, Jesper Lundbye Jensen, Michael James Grey, Alexandra Damgaard Vejlby, Bo Belhage, Jens Bo Holm-Nielsen

Human movement sense relies on both somatosensory feedback and on knowledge of the motor commands used to produce the movement. We have induced a movement illusion using repetitive transcranial magnetic stimulation over primary motor cortex and dorsal premotor cortex in the absence of limb movement and its associated somatosensory feedback. Afferent and efferent neural signalling was abolished in the arm with ischemic nerve block, and in the leg with spinal nerve block. Movement sensation was assessed following trains of high-frequency repetitive transcranial magnetic stimulation applied over primary motor cortex, dorsal premotor cortex, and a control area (posterior parietal cortex). Magnetic stimulation over primary motor cortex and dorsal premotor cortex produced a movement sensation that was significantly greater than stimulation over the control region. Movement sensation after dorsal premotor cortex stimulation was less affected by sensory and motor deprivation than was primary motor cortex stimulation. We propose that repetitive transcranial magnetic stimulation over dorsal premotor cortex produces a corollary discharge that is perceived as movement.
OriginalsprogEngelsk
TidsskriftP L o S One
Vol/bind5
Udgave nummer10
Sider (fra-til)e13301
ISSN1932-6203
DOI
StatusUdgivet - 2010

Bibliografisk note

CURIS 2010 5200 142

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