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dc.contributor.authorChetverikov, Andrey
dc.contributor.authorJehee, Janneke F. M.
dc.date.accessioned2024-05-13T11:20:29Z
dc.date.available2024-05-13T11:20:29Z
dc.date.created2023-12-13T14:15:47Z
dc.date.issued2023
dc.identifier.issn2041-1723
dc.identifier.urihttps://hdl.handle.net/11250/3130115
dc.description.abstractHumans infer motion direction from noisy sensory signals. We hypothesize that to make these inferences more precise, the visual system computes motion direction not only from velocity but also spatial orientation signals – a ‘streak’ created by moving objects. We implement this hypothesis in a Bayesian model, which quantifies knowledge with probability distributions, and test its predictions using psychophysics and fMRI. Using a probabilistic pattern-based analysis, we decode probability distributions of motion direction from trial-by-trial activity in the human visual cortex. Corroborating the predictions, the decoded distributions have a bimodal shape, with peaks that predict the direction and magnitude of behavioral errors. Interestingly, we observe similar bimodality in the distribution of the observers’ behavioral responses across trials. Together, these results suggest that observers use spatial orientation signals when estimating motion direction. More broadly, our findings indicate that the cortical representation of low-level visual features, such as motion direction, can reflect a combination of several qualitatively distinct signals.en_US
dc.language.isoengen_US
dc.publisherNatureen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleMotion direction is represented as a bimodal probability distribution in the human visual cortexen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.source.articlenumber7634en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.doi10.1038/s41467-023-43251-w
dc.identifier.cristin2213091
dc.source.journalNature Communicationsen_US
dc.identifier.citationNature Communications. 2023, 14 (1), 7634.en_US
dc.source.volume14en_US
dc.source.issue1en_US


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal