Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study.
A cross-modal association between somatosensory tactile sensation and parietal and occipital activities during Braille reading was initially discovered in tests with blind subjects, with sighted and blindfolded healthy subjects used as controls. However, the neural background of oral stereognosis re...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2014-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC4191970?pdf=render |
| _version_ | 1828344555614765056 |
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| author | Tomonori Kagawa Noriyuki Narita Sunao Iwaki Shingo Kawasaki Kazunobu Kamiya Shunsuke Minakuchi |
| author_facet | Tomonori Kagawa Noriyuki Narita Sunao Iwaki Shingo Kawasaki Kazunobu Kamiya Shunsuke Minakuchi |
| author_sort | Tomonori Kagawa |
| collection | DOAJ |
| description | A cross-modal association between somatosensory tactile sensation and parietal and occipital activities during Braille reading was initially discovered in tests with blind subjects, with sighted and blindfolded healthy subjects used as controls. However, the neural background of oral stereognosis remains unclear. In the present study, we investigated whether the parietal and occipital cortices are activated during shape discrimination by the mouth using functional near-infrared spectroscopy (fNIRS). Following presentation of the test piece shape, a sham discrimination trial without the test pieces induced posterior parietal lobe (BA7), extrastriate cortex (BA18, BA19), and striate cortex (BA17) activation as compared with the rest session, while shape discrimination of the test pieces markedly activated those areas as compared with the rest session. Furthermore, shape discrimination of the test pieces specifically activated the posterior parietal cortex (precuneus/BA7), extrastriate cortex (BA18, 19), and striate cortex (BA17), as compared with sham sessions without a test piece. We concluded that oral tactile sensation is recognized through tactile/visual cross-modal substrates in the parietal and occipital cortices during shape discrimination by the mouth. |
| first_indexed | 2024-04-13T23:59:07Z |
| format | Article |
| id | doaj.art-33efc63961d14013a008e2879500de64 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-04-13T23:59:07Z |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-33efc63961d14013a008e2879500de642022-12-22T02:23:46ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01910e10868510.1371/journal.pone.0108685Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study.Tomonori KagawaNoriyuki NaritaSunao IwakiShingo KawasakiKazunobu KamiyaShunsuke MinakuchiA cross-modal association between somatosensory tactile sensation and parietal and occipital activities during Braille reading was initially discovered in tests with blind subjects, with sighted and blindfolded healthy subjects used as controls. However, the neural background of oral stereognosis remains unclear. In the present study, we investigated whether the parietal and occipital cortices are activated during shape discrimination by the mouth using functional near-infrared spectroscopy (fNIRS). Following presentation of the test piece shape, a sham discrimination trial without the test pieces induced posterior parietal lobe (BA7), extrastriate cortex (BA18, BA19), and striate cortex (BA17) activation as compared with the rest session, while shape discrimination of the test pieces markedly activated those areas as compared with the rest session. Furthermore, shape discrimination of the test pieces specifically activated the posterior parietal cortex (precuneus/BA7), extrastriate cortex (BA18, 19), and striate cortex (BA17), as compared with sham sessions without a test piece. We concluded that oral tactile sensation is recognized through tactile/visual cross-modal substrates in the parietal and occipital cortices during shape discrimination by the mouth.http://europepmc.org/articles/PMC4191970?pdf=render |
| spellingShingle | Tomonori Kagawa Noriyuki Narita Sunao Iwaki Shingo Kawasaki Kazunobu Kamiya Shunsuke Minakuchi Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. PLoS ONE |
| title | Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. |
| title_full | Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. |
| title_fullStr | Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. |
| title_full_unstemmed | Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. |
| title_short | Does shape discrimination by the mouth activate the parietal and occipital lobes? - near-infrared spectroscopy study. |
| title_sort | does shape discrimination by the mouth activate the parietal and occipital lobes near infrared spectroscopy study |
| url | http://europepmc.org/articles/PMC4191970?pdf=render |
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