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dc.contributor.authorKaestner, M.
dc.contributor.authorMaloney, R.T.
dc.contributor.authorWailes-Newson, K.H.
dc.contributor.authorBloj, Marina
dc.contributor.authorHarris, J.M.
dc.contributor.authorMorland, A.B.
dc.contributor.authorWade, A.R.
dc.date.accessioned2019-06-21T18:21:40Z
dc.date.accessioned2019-06-28T11:05:37Z
dc.date.available2019-06-21T18:21:40Z
dc.date.available2019-06-28T11:05:37Z
dc.date.issued2019-07
dc.identifier.citationKaestner M, Maloney RT, Wailes-Newson KH et al (2019) Asymmetries between achromatic and chromatic extraction of 3D motion signals. PNAS. 116(27): 13631-13640.en_US
dc.identifier.urihttp://hdl.handle.net/10454/17152
dc.descriptionYesen_US
dc.description.abstractMotion in depth (MID) can be cued by high-resolution changes in binocular disparity over time (CD), and low-resolution interocular velocity differences (IOVD). Computational differences between these two mechanisms suggest that they may be implemented in visual pathways with different spatial and temporal resolutions. Here, we used fMRI to examine how achromatic and S-cone signals contribute to human MID perception. Both CD and IOVD stimuli evoked responses in a widespread network that included early visual areas, parts of the dorsal and ventral streams, and motion-selective area hMT+. Crucially, however, we measured an interaction between MID type and chromaticity. fMRI CD responses were largely driven by achromatic stimuli, but IOVD responses were better driven by isoluminant S-cone inputs. In our psychophysical experiments, when S-cone and achromatic stimuli were matched for perceived contrast, participants were equally sensitive to the MID in achromatic and S-cone IOVD stimuli. In comparison, they were relatively insensitive to S-cone CD. These findings provide evidence that MID mechanisms asymmetrically draw on information in precortical pathways. An early opponent motion signal optimally conveyed by the S-cone pathway may provide a substantial contribution to the IOVD mechanism.en_US
dc.description.sponsorshipSupported by the Biotechnology and Biological Sciences Research Council Grants BB/M002543/1 (to A.R.W.), BB/M001660/1 (to J.M.H.), and BB/M001210/1 (to M.B.).en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1073/pnas.1817202116en_US
dc.rights© 2019 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).en_US
dc.subject3D motionen_US
dc.subjectBinocular visionen_US
dc.subjectColouren_US
dc.titleAsymmetries between achromatic and chromatic extraction of 3D motion signalsen_US
dc.status.refereedYesen_US
dc.date.Accepted2019-05-24
dc.date.application2019-06-17
dc.typeArticleen_US
dc.type.versionPublished versionen_US
dc.date.updated2019-06-21T17:21:47Z
refterms.dateFOA2019-06-28T11:06:21Z


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