dc.contributor.author |
Morgan, M |
en |
dc.contributor.author |
Raphael, S |
en |
dc.contributor.author |
Tibber, M |
en |
dc.contributor.author |
Dakin, Steven |
en |
dc.coverage.spatial |
England |
en |
dc.date.accessioned |
2017-11-15T01:55:28Z |
en |
dc.date.issued |
2014-09-07 |
en |
dc.identifier.citation |
Proceedings of the Royal Society B: Biological Sciences 281(1790):1137. 07 Sep 2014 |
en |
dc.identifier.issn |
0962-8452 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/36422 |
en |
dc.description.abstract |
It has been suggested that numerosity is an elementary quality of perception, similar to colour. If so (and despite considerable investigation), its mechanism remains unknown. Here, we show that observers require on average a massive difference of approximately 40% to detect a change in the number of objects that vary irrelevantly in blur, contrast and spatial separation, and that some naive observers require even more than this. We suggest that relative numerosity is a type of texture discrimination and that a simple model computing the contrast energy at fine spatial scales in the image can perform at least as well as human observers. Like some human observers, this mechanism finds it harder to discriminate relative numerosity in two patterns with different degrees of blur, but it still outpaces the human. We propose energy discrimination as a benchmark model against which more complex models and new data can be tested. |
en |
dc.language |
eng |
en |
dc.publisher |
Royal Society, The |
en |
dc.relation.ispartofseries |
Proceedings of the Royal Society B: Biological Sciences |
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.subject |
numerosity |
en |
dc.subject |
psychophysics |
en |
dc.subject |
texture perception |
en |
dc.subject |
Adolescent |
en |
dc.subject |
Adult |
en |
dc.subject |
Aged |
en |
dc.subject |
Computer Simulation |
en |
dc.subject |
Contrast Sensitivity |
en |
dc.subject |
Discrimination (Psychology) |
en |
dc.subject |
Female |
en |
dc.subject |
Humans |
en |
dc.subject |
Male |
en |
dc.subject |
Middle Aged |
en |
dc.subject |
Pattern Recognition, Visual |
en |
dc.title |
A texture-processing model of the 'visual sense of number' |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1098/rspb.2014.1137 |
en |
pubs.issue |
1790 |
en |
pubs.begin-page |
1 |
en |
pubs.volume |
281 |
en |
dc.rights.holder |
Copyright: The Royal Society |
en |
dc.identifier.pmid |
25030988 |
en |
pubs.end-page |
9 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
447396 |
en |
pubs.org-id |
Medical and Health Sciences |
en |
pubs.org-id |
Optometry and Vision Science |
en |
dc.identifier.eissn |
1471-2954 |
en |
dc.identifier.pii |
rspb.2014.1137 |
en |
pubs.record-created-at-source-date |
2017-11-15 |
en |
pubs.online-publication-date |
2014-07-16 |
en |
pubs.dimensions-id |
25030988 |
en |