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Conference Paper: Identifying multivariate patterns for illusory color perception using decoded fMRI neurofeedback

TitleIdentifying multivariate patterns for illusory color perception using decoded fMRI neurofeedback
Authors
Issue Date2018
PublisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/
Citation
18th Annual Meeting of Vision Sciences Society (VSS 2018), St. Pete Beach, FL, 18-23 May 2018, In Journal of Vision, 2018, v. 18 n. 10, p. 872-872 How to Cite?
AbstractPrevious studies have shown that spontaneous fluctuations in prestimulus fMRI activity can predict trial-by-trial fluctuations in the perception of identical stimuli (Boly et al., 2007; Hesselmann et al., 2008, 2010; Sadaghiani et al., 2009; Rahnev et al., 2012; Pajani et al., 2015), yet such activity on its own does not seem to lead to conscious perception, even when awareness is carefully assessed in a forced-choice manner (Shibata et al., 2011; Amano et al., 2016). Here, we investigated why awareness is lacking in these cases, and whether it may be possible to make spontaneous activity conscious. We hypothesized that for consciousness to arise, specific neural patterns in both visual and frontoparietal areas may be required. To encourage the co-occurrence of such activity, we used MVPA-based decoded fMRI neurofeedback (DecNef) (Shibata et al., 2011). In previous work we identified frontoparietal voxel patterns representing high perceptual confidence (Cortese et al., 2016). Here, we rewarded subjects for simultaneously inducing these patterns for high perceptual confidence in frontoparietal areas and specific patterns for color in visual areas. We found that false color perception was associated with activation of high confidence patterns in frontoparietal areas, but not with activation of color patterns in visual areas. This suggests a unique role for a frontoparietal network in the promotion of spontaneous neural representations from an unconscious to a conscious state.
Descriptionabstract
Persistent Identifierhttp://hdl.handle.net/10722/276275
ISSN
2023 Impact Factor: 2.0
2023 SCImago Journal Rankings: 0.849

 

DC FieldValueLanguage
dc.contributor.authorKnotts, JD-
dc.contributor.authorCortese, A-
dc.contributor.authorKawato, M-
dc.contributor.authorLau, H-
dc.date.accessioned2019-09-10T02:59:36Z-
dc.date.available2019-09-10T02:59:36Z-
dc.date.issued2018-
dc.identifier.citation18th Annual Meeting of Vision Sciences Society (VSS 2018), St. Pete Beach, FL, 18-23 May 2018, In Journal of Vision, 2018, v. 18 n. 10, p. 872-872-
dc.identifier.issn1534-7362-
dc.identifier.urihttp://hdl.handle.net/10722/276275-
dc.descriptionabstract-
dc.description.abstractPrevious studies have shown that spontaneous fluctuations in prestimulus fMRI activity can predict trial-by-trial fluctuations in the perception of identical stimuli (Boly et al., 2007; Hesselmann et al., 2008, 2010; Sadaghiani et al., 2009; Rahnev et al., 2012; Pajani et al., 2015), yet such activity on its own does not seem to lead to conscious perception, even when awareness is carefully assessed in a forced-choice manner (Shibata et al., 2011; Amano et al., 2016). Here, we investigated why awareness is lacking in these cases, and whether it may be possible to make spontaneous activity conscious. We hypothesized that for consciousness to arise, specific neural patterns in both visual and frontoparietal areas may be required. To encourage the co-occurrence of such activity, we used MVPA-based decoded fMRI neurofeedback (DecNef) (Shibata et al., 2011). In previous work we identified frontoparietal voxel patterns representing high perceptual confidence (Cortese et al., 2016). Here, we rewarded subjects for simultaneously inducing these patterns for high perceptual confidence in frontoparietal areas and specific patterns for color in visual areas. We found that false color perception was associated with activation of high confidence patterns in frontoparietal areas, but not with activation of color patterns in visual areas. This suggests a unique role for a frontoparietal network in the promotion of spontaneous neural representations from an unconscious to a conscious state.-
dc.languageeng-
dc.publisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/-
dc.relation.ispartofJournal of Vision-
dc.titleIdentifying multivariate patterns for illusory color perception using decoded fMRI neurofeedback-
dc.typeConference_Paper-
dc.identifier.emailLau, H: oldchild@hku.hk-
dc.identifier.authorityLau, H=rp02270-
dc.identifier.doi10.1167/18.10.872-
dc.identifier.hkuros304561-
dc.identifier.volume18-
dc.identifier.issue10-
dc.identifier.spage872-
dc.identifier.epage872-
dc.publisher.placeUnited States-
dc.identifier.issnl1534-7362-

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