Vision of the body modulates processing in primary somatosensory cortex
Abstract
Viewing the body affects somatosensory processing, even when entirely non-informative about stimulation. While several studies have reported effects of viewing the body on cortical processing of touch and pain, the neural locus of this modulation remains unclear. We investigated whether seeing the body modulates processing in primary somatosensory cortex (SI) by measuring short-latency somatosensory evoked-potentials (SEPs) elicited by electrical stimulation of the median nerve while participants looked directly at their stimulated hand or at a non-hand object. Vision of the body produced a clear reduction of the P27 component of the SEP recorded over contralateral parietal channels, which is known to reflect processing in SI. These results provide the first direct evidence that seeing the body modulates processing in SI and demonstrate that vision can affect even the earliest stages of cortical somatosensory processing.
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Vision of a body part being touched pre-activates the corresponding somatotopic region in PoCG, thus influencing tactile sensation.
“the vision of a body part being touched is known to pre-activate the corresponding somatotopic region in PoCG, thus influencing tactile sensation (Taylor-Clarke et al. 2002; Blakemore et al. 2005; Longo et al. 2011; Schaefer et al. 2012).”
From Neuroanatomical correlates of peripersonal space: bridging the gap between perception, action, emotion and social cognition (2024) · cites this paper as Longo et al. 2011
Some evidence suggests that PoCG may be involved in multisensory integration.
“some evidence suggests that PoCG may be involved in multisensory integration.”
From Neuroanatomical correlates of peripersonal space: bridging the gap between perception, action, emotion and social cognition (2024) · cites this paper as Longo et al. 2011
Cites
Vision Modulates Somatosensory Cortical Processing
Taylor-Clarke, M., Kennett, S., & Haggard, P. (2002) · Current Biology · doi:10.1016/s0960-9822(01)00681-9 · Cited by 309 · see citing works
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Grivaz, P., Blanke, O., & Serino, A. (2017) · NeuroImage · doi:10.1016/j.neuroimage.2016.12.052 · Cited by 203 · see citing works
Basile, G. A., Tatti, E., Bertino, S., Milardi, D., Genovese, G., Bruno, A., Muscatello, M. R. A., Ciurleo, R., Cerasa, A., Quartarone, A., et al. (2024) · Brain Structure and Function · doi:10.1007/s00429-024-02781-9 · Cited by 24 · see citing works
“As an example, the vision of a body part being touched is known to pre-activate the corresponding somatotopic region in PoCG, thus influ - encing tactile sensation (Taylor-Clarke et al. 2002; Blake-more et al. 2005; Longo et al. 2011; Schaefer et al. 2012).”
Background
- Authors
- Longo, M. R., Pernigo, S., & Haggard, P.
- Affiliations
- University of London (GB)
- University of Verona (IT)
- University College London (GB)
- Corresponding author
- Longo, Matthew R.
- Venue
- Neuroscience Letters
- Publisher
- Elsevier BV
- Published
- 2011-02
- Volume
- 489
- Issue
- 3
- Pages
- 159-163
- ISSN
- 0304-3940 (ISSN-L)
- OpenAlex
- W1978964801
- Cited by
- 57
- References
- 1
- Citations by year
- 2025: 1 · 2024: 4 · 2023: 3 · 2022: 2 · 2021: 6 · 2020: 1 · 2019: 4 · 2018: 2 · 2017: 5 · 2016: 3 · 2015: 5 · 2014: 6 · 2013: 7 · 2012: 7
- FWCI
- 2.90
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroscience Letters (publishedVersion)
- PubMed (publishedVersion)
- BIROn (Birkbeck, University of London) (submittedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- Leverhulme Trust
- Biotechnology and Biological Sciences Research Council (BB/D009529/1)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Keywords
- primary somatosensory cortex, somatosensory evoked potentials, median nerve stimulation, tactile perception, pain perception
- MeSH terms
- Adolescent, Adult, Electric Stimulation, Evoked Potentials, Somatosensory, Female, Humans, Male, Median Nerve, Photic Stimulation, Somatosensory Cortex, Visual Perception
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