Association between stimulus-evoked somatosensory inhibition and movement-related sensorimotor oscillation: A magnetoencephalographic study

作者：Hsiao Fu Jung^*; Chen Wei Ta; Lin Yung Yang

来源：Neuroscience Letters, 2018, 664: 74-78.

DOI：10.1016/j.neulet.2017.11.014

• Somatosensory
• Sensorimotor
• Event-related desynchronization/synchronization (ERD/ERS)
• Paired-pulse stimulation
• Self-paced movement
• Magnetoencephalography (MEG)

The interaction between the somatosensory and motor cortices, is understood; however, their functional relationship remains elusive. To elucidate the association between somatosensory and sensorimotor functions, this study investigated the correlation between somatosensory activities in response to paired-pulse stimulation and sensorimotor oscillations during self-paced finger movement in 18 healthy male subjects by using a magne-toencephalographic recording. The main finding was that stimulus-evoked somatosensory gating activities were significantly correlated with movement-related sensorimotor oscillatory responses. Specifically, the gating ratios of somatosensory N20m were related to the power changes of sensorimotor beta event-related desynchronization (ERD) (p = 0.003) and event-related synchronization (ERS) (p = 0.05). In conclusion, we confirmed that the inhibition of stimulus-evoked somatosensory responses is associated with the oscillatory characteristics of movement-related sensorimotor activities.

• 出版日期2018-1-18