
doi: 10.1002/hbm.21172
pmid: 21305659
pmc: PMC6870269
handle: 10281/21320 , 11572/145578 , 11379/73452
doi: 10.1002/hbm.21172
pmid: 21305659
pmc: PMC6870269
handle: 10281/21320 , 11572/145578 , 11379/73452
AbstractRecent studies suggest the existence of a visuo‐tactile mirror system, comprising the primary (SI) and secondary (SII) somatosensory cortices, which matches observed touch with felt touch. Here, repetitive transcranial magnetic stimulation (rTMS) was used to determine whether SI or SII play a functional role in the visual processing of tactile events. Healthy participants performed a visual discrimination task with tactile stimuli (a finger touching a hand) and a control task (a finger moving without touching). During both tasks, rTMS was applied over either SI or SII, and to the occipital cortex. rTMS over SI selectively reduced subject performance for interpreting whether a contralateral visual tactile stimulus contains a tactile event, whereas SII stimulation impaired visual processing regardless of the tactile component. These findings provide evidence for a multimodal sensory‐motor system with mirror properties, where somatic and visual properties of action converge. SI, a cortical area traditionally viewed as modality‐specific, is selectively implicated in the visual processing of touch. These results are in line with the existence of a sensory mirror system mediating the embodied simulation concept. Hum Brain Mapp, 2011. © 2011 Wiley Periodicals, Inc.
Male, Brain Mapping, crossmodal; mirror neuron system; rTMS; primary somatosensory cortex; visual processing; tactile observation; sensorimotor, Somatosensory Cortex, TMS, somatosensory cortex, mirror system, Transcranial Magnetic Stimulation, Young Adult, Touch Perception, Crossmodal; Mirror neuron system; Primary somatosensory cortex; RTMS; Sensorimotor; Tactile observation; Visual processing;, Visual Perception, Humans, Female, Mirror Neurons
Male, Brain Mapping, crossmodal; mirror neuron system; rTMS; primary somatosensory cortex; visual processing; tactile observation; sensorimotor, Somatosensory Cortex, TMS, somatosensory cortex, mirror system, Transcranial Magnetic Stimulation, Young Adult, Touch Perception, Crossmodal; Mirror neuron system; Primary somatosensory cortex; RTMS; Sensorimotor; Tactile observation; Visual processing;, Visual Perception, Humans, Female, Mirror Neurons
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