Show simple item record

dc.contributor.authorSinha, Pawan
dc.contributor.authorCrucilla, Sarah
dc.contributor.authorGandhi, Tapan
dc.contributor.authorRose, Dylan
dc.contributor.authorSingh, Amy
dc.contributor.authorGanesh, Suma
dc.contributor.authorMathur, Umang
dc.contributor.authorBex, Peter
dc.date.accessioned2021-12-06T16:38:04Z
dc.date.available2021-12-06T16:38:04Z
dc.date.issued2020
dc.identifier.urihttps://hdl.handle.net/1721.1/138327
dc.description.abstractIn the phenomenon of simultaneous brightness contrast, two patches, one on a dark background and the other on a light one, appear to have different brightness despite being physically equi-luminant. Elucidating the phenomenon's underlying mechanisms is relevant for the larger question of how the visual system makes photometric judgments in images. Accounts over the past century have spanned low-, mid- and high-level visual processes, but a definitive resolution has not emerged. We present three studies that collectively demonstrate that the computations underlying this phenomenon are low-level, instantiated prior to binocular fusion, and available innately, without need for inferential learning via an individual's visual experience. In our first two studies, we find that strong brightness induction is obtained even when observers are unaware of any luminance differences in the neighborhoods of the probe patches. Results with dichoptic displays reveal that eye of origin, although not evident consciously, has a marked influence on the eventual brightness percept of the probe patches, thereby localizing brightness estimation to a site preceding binocular fusion. The third study uses conventional simultaneous brightness contrast displays, but an unusual group of participants: Congenitally blind children whom we were able to treat surgically. The results demonstrate an immediate susceptibility to the simultaneous brightness illusion after sight onset. Together, these data strongly constrain the search for mechanisms underlying a fundamental brightness phenomenon.en_US
dc.language.isoen
dc.publisherElsevier BVen_US
dc.relation.isversionof10.1016/J.VISRES.2020.04.012en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourcePMCen_US
dc.titleMechanisms underlying simultaneous brightness contrast: Early and innateen_US
dc.typeArticleen_US
dc.identifier.citationSinha, Pawan, Crucilla, Sarah, Gandhi, Tapan, Rose, Dylan, Singh, Amy et al. 2020. "Mechanisms underlying simultaneous brightness contrast: Early and innate." Vision Research, 173.
dc.contributor.departmentMassachusetts Institute of Technology. Department of Brain and Cognitive Sciences
dc.relation.journalVision Researchen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2021-12-06T16:34:20Z
dspace.orderedauthorsSinha, P; Crucilla, S; Gandhi, T; Rose, D; Singh, A; Ganesh, S; Mathur, U; Bex, Pen_US
dspace.date.submission2021-12-06T16:34:22Z
mit.journal.volume173en_US
mit.licensePUBLISHER_CC
mit.metadata.statusAuthority Work and Publication Information Neededen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record