期刊
JOURNAL OF NEUROSCIENCE
卷 37, 期 14, 页码 3840-3847出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.2123-16.2017
关键词
noninvasive brain stimulation; parietal cortex; static magnet fields; transcranial magnetic stimulation
资金
- Ministerio de Economia y Competitividad of Spain
- European Union (FEDER) A way to make Europe [SAF2012-39589, SAF2016-80647-R, SAF2011-27766]
The role of neuronal oscillations in human somatosensory perception is currently unclear. To address this, here we use noninvasive brain stimulation to artificially modulate cortical network dynamics in the context of neurophysiological and behavioral recordings. We demonstrate that transcranial static magnetic field stimulation (tSMS) over the somatosensory parietal cortex increases oscillatory power specifically in the alpha range, without significantly affecting bottom-up thalamocortical inputs indexed by the early cortical component of somatosensory evoked potentials. Critically, we next show that parietal tSMS enhances the detection of near-threshold somatosensory stimuli. Interestingly, this behavioral improvement reflects a decrease of habituation to somatosensation. Our data therefore provide causal evidence that somatosensory perception depends on parietal alpha activity.
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