Improving visual perception through neurofeedback
Identifieur interne : 000187 ( Main/Exploration ); précédent : 000186; suivant : 000188Improving visual perception through neurofeedback
Auteurs : Frank Scharnowski [Royaume-Uni, Suisse] ; Chloe Hutton [Royaume-Uni] ; Oliver Josephs [Royaume-Uni] ; Nikolaus Weiskopf [Royaume-Uni] ; Geraint Rees [Royaume-Uni]Source :
- The Journal of neuroscience : the official journal of the Society for Neuroscience [ 0270-6474 ] ; 2012.
Abstract
Perception depends on the interplay of ongoing spontaneous activity and stimulus-evoked activity in sensory cortices. This raises the possibility that training ongoing spontaneous activity alone might be sufficient for enhancing perceptual sensitivity. To test this, we trained human participants to control ongoing spontaneous activity in circumscribed regions of retinotopic visual cortex using real-time functional MRI based neurofeedback. After training, we tested participants using a new and previously untrained visual detection task that was presented at the visual field location corresponding to the trained region of visual cortex. Perceptual sensitivity was significantly enhanced only when participants who had previously learned control over ongoing activity were now exercising control, and only for that region of visual cortex. Our new approach allows us to non-invasively and non-pharmacologically manipulate regionally specific brain activity, and thus provide ‘brain training’ to deliver particular perceptual enhancements.
Url:
DOI: 10.1523/JNEUROSCI.6334-11.2012
PubMed: 23223302
PubMed Central: 3520425
Affiliations:
- Royaume-Uni, Suisse
- Angleterre, Canton de Genève, Grand Londres
- Genève, Londres
- University College de Londres, Université de Genève
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Genève</region></placeName></affiliation></author><author><name sortKey="Hutton, Chloe" sort="Hutton, Chloe" uniqKey="Hutton C" first="Chloe" last="Hutton">Chloe Hutton</name><affiliation wicri:level="4"><nlm:aff id="A1">Wellcome Trust Centre for Neuroimaging, UCL Institute of Neurology, University College London, 12 Queen Square, LondonWC1N 3BG, UK</nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Wellcome Trust Centre for Neuroimaging, UCL Institute of Neurology, University College London, 12 Queen Square, LondonWC1N 3BG</wicri:regionArea><orgName type="university">University College de Londres</orgName><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author><author><name sortKey="Josephs, Oliver" sort="Josephs, Oliver" uniqKey="Josephs O" first="Oliver" last="Josephs">Oliver Josephs</name><affiliation wicri:level="4"><nlm:aff 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type="university">University College de Londres</orgName><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation><affiliation wicri:level="4"><nlm:aff id="A2">UCL Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AR, UK</nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>UCL Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AR</wicri:regionArea><orgName type="university">University College de Londres</orgName><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author></analytic><series><title level="j">The Journal of neuroscience : the official journal of the Society for Neuroscience</title><idno type="ISSN">0270-6474</idno><idno type="eISSN">1529-2401</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P2">Perception depends on the interplay of ongoing spontaneous activity and stimulus-evoked activity in sensory cortices. This raises the possibility that training ongoing spontaneous activity alone might be sufficient for enhancing perceptual sensitivity. To test this, we trained human participants to control ongoing spontaneous activity in circumscribed regions of retinotopic visual cortex using real-time functional MRI based neurofeedback. After training, we tested participants using a new and previously untrained visual detection task that was presented at the visual field location corresponding to the trained region of visual cortex. Perceptual sensitivity was significantly enhanced only when participants who had previously learned control over ongoing activity were now exercising control, and only for that region of visual cortex. Our new approach allows us to non-invasively and non-pharmacologically manipulate regionally specific brain activity, and thus provide ‘brain training’ to deliver particular perceptual enhancements.</p></div></front></TEI><affiliations><list><country><li>Royaume-Uni</li><li>Suisse</li></country><region><li>Angleterre</li><li>Canton de Genève</li><li>Grand Londres</li></region><settlement><li>Genève</li><li>Londres</li></settlement><orgName><li>University College de Londres</li><li>Université de Genève</li></orgName></list><tree><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Scharnowski, Frank" sort="Scharnowski, Frank" uniqKey="Scharnowski F" first="Frank" last="Scharnowski">Frank Scharnowski</name></region><name sortKey="Hutton, Chloe" sort="Hutton, Chloe" uniqKey="Hutton C" first="Chloe" last="Hutton">Chloe Hutton</name><name sortKey="Josephs, Oliver" sort="Josephs, Oliver" uniqKey="Josephs O" first="Oliver" last="Josephs">Oliver Josephs</name><name sortKey="Rees, Geraint" sort="Rees, Geraint" uniqKey="Rees G" first="Geraint" last="Rees">Geraint Rees</name><name sortKey="Rees, Geraint" sort="Rees, Geraint" uniqKey="Rees G" first="Geraint" last="Rees">Geraint Rees</name><name sortKey="Scharnowski, Frank" sort="Scharnowski, Frank" uniqKey="Scharnowski F" first="Frank" last="Scharnowski">Frank Scharnowski</name><name sortKey="Weiskopf, Nikolaus" sort="Weiskopf, Nikolaus" uniqKey="Weiskopf N" first="Nikolaus" last="Weiskopf">Nikolaus Weiskopf</name></country><country name="Suisse"><noRegion><name sortKey="Scharnowski, Frank" sort="Scharnowski, Frank" uniqKey="Scharnowski F" first="Frank" last="Scharnowski">Frank Scharnowski</name></noRegion><name sortKey="Scharnowski, Frank" sort="Scharnowski, Frank" uniqKey="Scharnowski F" first="Frank" last="Scharnowski">Frank Scharnowski</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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