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Modulation of somatosensory evoked potentials using transcranial magnetic intermittent theta burst stimulation

Katayama, T; Rothwell, JC; (2007) Modulation of somatosensory evoked potentials using transcranial magnetic intermittent theta burst stimulation. CLIN NEUROPHYSIOL , 118 (11) 2506 - 2511. 10.1016/j.clinph.2007.08.011.

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Abstract

Objective: To study the modulation of somatosensory evoked potentials (SEP) using transcranial magnetic intermittent theta burst stimulation (iTBS) over human primary motor (M1) and sensory (S1) cortices.Methods: Eleven healthy subjects participated in the study. Median nerve SEP were elicited by electrical stimulation at the right wrist before and after 600-pulse iTBS over M1 or S1 of the left hemispheres at the intensity of 80% active motor threshold.Results: iTBS over S1 facilitated the N20o-N20p, N20p-P25 and P25-N33 amplitudes significantly and the maximal effect appeared 15 min after the stimulation. The facilitating effect was observed when the initial phase of the current in the brain was directed antero-medially, whereas the facilitation did not appear when the inverted coil direction was applied. On the other hand, no changes were observed after iTBS over M1. The latencies of the measured onsets and peaks were not affected through the experiments.Conclusions: iTBS over S1 has the facilitating effect on the central somatosensory pathway, and the position and direction of the coil are the determinant factors of the effects.Significance: iTBS can be useful technique to induce synaptic plasticity in human central somatosensory pathway. (c) 2007 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.

Type: Article
Title: Modulation of somatosensory evoked potentials using transcranial magnetic intermittent theta burst stimulation
DOI: 10.1016/j.clinph.2007.08.011
Keywords: Transcranial magnetic stimulation, theta burst stimulation, somatosensory evoked potential, somatosensory cortex, neuroplasticity, human, SHORT-LASTING IMPAIRMENT, SENSORIMOTOR CORTEX, MEDIAN NERVE, CORTICAL EXCITABILITY, TACTILE PERCEPTION, MOTOR CORTEX, HZ RTMS, HUMANS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Movement Neurosciences
URI: http://discovery.ucl.ac.uk/id/eprint/122978
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