Abstract:
:The vestibular system has widespread interactions with other sensory modalities. Here we investigate whether vestibular stimulation modulates somatosensory function, by assessing the ability to detect faint tactile stimuli to the fingertips of the left and right hand with or without galvanic vestibular stimulation (GVS). We found that left anodal and right cathodal GVS, significantly enhanced sensitivity to mild shocks on either hand, without affecting response bias. There was no such effect with either right anodal and left cathodal GVS or sham stimulation. Further, the enhancement of somatosensory sensitivity following GVS does not strongly depend on the duration of GVS, or the interval between GVS and tactile stimulation. Vestibular inputs reach the somatosensory cortex, increasing the sensitivity of perceptual circuitry.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Ferrè ER,Day BL,Bottini G,Haggard Pdoi
10.1016/j.neulet.2013.06.046subject
Has Abstractpub_date
2013-08-29 00:00:00pages
35-40eissn
0304-3940issn
1872-7972pii
S0304-3940(13)00593-4journal_volume
550pub_type
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