dc.contributor.author |
de Haas, Benjamin |
en |
dc.contributor.author |
Schwarzkopf, Dietrich |
en |
dc.date.accessioned |
2018-10-17T02:02:30Z |
en |
dc.date.issued |
2018-01-12 |
en |
dc.identifier.citation |
Scientific reports 8(1):611 12 Jan 2018 |
en |
dc.identifier.issn |
2045-2322 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/42485 |
en |
dc.description.abstract |
Early visual cortex responds to illusory contours in which abutting lines or collinear edges imply the presence of an occluding surface, as well as to occluded parts of an object. Here we used functional magnetic resonance imaging (fMRI) and population receptive field (pRF) analysis to map retinotopic responses in early visual cortex using bar stimuli defined by illusory contours, occluded parts of a bar, or subtle luminance contrast. All conditions produced retinotopic responses in early visual field maps even though signal-to-noise ratios were very low. We found that signal-to-noise ratios and coherence with independent high-contrast mapping data increased from V1 to V2 to V3. Moreover, we found no differences of signal-to-noise ratios or pRF sizes between the low-contrast luminance and illusion conditions. We propose that all three conditions mapped spatial attention to the bar location rather than activations specifically related to illusory contours or occlusion. |
en |
dc.format.medium |
Electronic |
en |
dc.language |
eng |
en |
dc.relation.ispartofseries |
Scientific reports |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
en |
dc.subject |
Visual Cortex |
en |
dc.subject |
Humans |
en |
dc.subject |
Illusions |
en |
dc.subject |
Magnetic Resonance Imaging |
en |
dc.subject |
Photic Stimulation |
en |
dc.subject |
Form Perception |
en |
dc.subject |
Visual Perception |
en |
dc.subject |
Adult |
en |
dc.subject |
Female |
en |
dc.subject |
Male |
en |
dc.subject |
Young Adult |
en |
dc.title |
Spatially selective responses to Kanizsa and occlusion stimuli in human visual cortex. |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1038/s41598-017-19121-z |
en |
pubs.issue |
1 |
en |
pubs.begin-page |
611 |
en |
pubs.volume |
8 |
en |
dc.rights.holder |
Copyright: The authors |
en |
dc.identifier.pmid |
29330457 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.subtype |
Research Support, Non-U.S. Gov't |
en |
pubs.subtype |
research-article |
en |
pubs.subtype |
Journal Article |
en |
pubs.elements-id |
721706 |
en |
pubs.org-id |
Medical and Health Sciences |
en |
pubs.org-id |
Optometry and Vision Science |
en |
dc.identifier.eissn |
2045-2322 |
en |
pubs.record-created-at-source-date |
2018-01-14 |
en |
pubs.dimensions-id |
29330457 |
en |