The cutaneous rabbit illusion affects human primary sensory cortex somatotopically.
We used functional magnetic resonance imaging (fMRI) to study neural correlates of a robust somatosensory illusion that can dissociate tactile perception from physical stimulation. Repeated rapid stimulation at the wrist, then near the elbow, can create the illusion of touches at intervening locatio...
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Public Library of Science (PLoS)
2006-03-01
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| Series: | PLoS Biology |
| Online Access: | https://journals.plos.org/plosbiology/article/file?id=10.1371/journal.pbio.0040069&type=printable |
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| author | Felix Blankenburg Christian C Ruff Ralf Deichmann Geraint Rees Jon Driver |
| author_facet | Felix Blankenburg Christian C Ruff Ralf Deichmann Geraint Rees Jon Driver |
| author_sort | Felix Blankenburg |
| collection | DOAJ |
| description | We used functional magnetic resonance imaging (fMRI) to study neural correlates of a robust somatosensory illusion that can dissociate tactile perception from physical stimulation. Repeated rapid stimulation at the wrist, then near the elbow, can create the illusion of touches at intervening locations along the arm, as if a rabbit hopped along it. We examined brain activity in humans using fMRI, with improved spatial resolution, during this version of the classic cutaneous rabbit illusion. As compared with control stimulation at the same skin sites (but in a different order that did not induce the illusion), illusory sequences activated contralateral primary somatosensory cortex, at a somatotopic location corresponding to the filled-in illusory perception on the forearm. Moreover, the amplitude of this somatosensory activation was comparable to that for veridical stimulation including the intervening position on the arm. The illusion additionally activated areas of premotor and prefrontal cortex. These results provide direct evidence that illusory somatosensory percepts can affect primary somatosensory cortex in a manner that corresponds somatotopically to the illusory percept. |
| format | Article |
| id | doaj-art-d0c061c6d40e461d8765fa52f549ea44 |
| institution | OA Journals |
| issn | 1544-9173 1545-7885 |
| language | English |
| publishDate | 2006-03-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Biology |
| spelling | doaj-art-d0c061c6d40e461d8765fa52f549ea442025-08-20T02:00:50ZengPublic Library of Science (PLoS)PLoS Biology1544-91731545-78852006-03-0143e6910.1371/journal.pbio.0040069The cutaneous rabbit illusion affects human primary sensory cortex somatotopically.Felix BlankenburgChristian C RuffRalf DeichmannGeraint ReesJon DriverWe used functional magnetic resonance imaging (fMRI) to study neural correlates of a robust somatosensory illusion that can dissociate tactile perception from physical stimulation. Repeated rapid stimulation at the wrist, then near the elbow, can create the illusion of touches at intervening locations along the arm, as if a rabbit hopped along it. We examined brain activity in humans using fMRI, with improved spatial resolution, during this version of the classic cutaneous rabbit illusion. As compared with control stimulation at the same skin sites (but in a different order that did not induce the illusion), illusory sequences activated contralateral primary somatosensory cortex, at a somatotopic location corresponding to the filled-in illusory perception on the forearm. Moreover, the amplitude of this somatosensory activation was comparable to that for veridical stimulation including the intervening position on the arm. The illusion additionally activated areas of premotor and prefrontal cortex. These results provide direct evidence that illusory somatosensory percepts can affect primary somatosensory cortex in a manner that corresponds somatotopically to the illusory percept.https://journals.plos.org/plosbiology/article/file?id=10.1371/journal.pbio.0040069&type=printable |
| spellingShingle | Felix Blankenburg Christian C Ruff Ralf Deichmann Geraint Rees Jon Driver The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. PLoS Biology |
| title | The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. |
| title_full | The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. |
| title_fullStr | The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. |
| title_full_unstemmed | The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. |
| title_short | The cutaneous rabbit illusion affects human primary sensory cortex somatotopically. |
| title_sort | cutaneous rabbit illusion affects human primary sensory cortex somatotopically |
| url | https://journals.plos.org/plosbiology/article/file?id=10.1371/journal.pbio.0040069&type=printable |
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