Haptic exploration attenuates and alters somatosensory cortical oscillations

摘要

Key points class="unordered" style="list-style-type:disc" id="tjp13217-list-0001">Several behavioural studies have shown the sensory perceptions are reduced during movement; yet the neurophysiological reason for this is not clear.Participants underwent stimulation of the median nerve when either sitting quietly (i.e. passive stimulation condition) or performing haptic exploration of a ball with the left hand.Magnetoencephalographic brain imaging and advanced beamforming methods were used to identify the differences in somatosensory cortical responses.We show that the neural populations active during the passive stimulation condition were strongly gated during the haptic exploration task.These results imply that the reduced haptic perceptions might be governed by gating of certain somatosensory neural populations.