dc.contributor.author |
Dekker, TM |
|
dc.contributor.author |
Schwarzkopf, DS |
|
dc.contributor.author |
de Haas, B |
|
dc.contributor.author |
Nardini, M |
|
dc.contributor.author |
Sereno, MI |
|
dc.date.accessioned |
2024-07-15T02:49:52Z |
|
dc.date.available |
2024-07-15T02:49:52Z |
|
dc.date.issued |
2017 |
|
dc.identifier.citation |
(2017). bioRxiv 2017 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/69256 |
|
dc.description.abstract |
Improvements in visuospatial perception such as contrast sensitivity and Vernier acuity continue until late in childhood, but the neural mechanisms driving these age-related changes are currently unclear. One contributing factor could be the protracted development of spatial tuning of neuronal populations across the visual cortex. Here we tested this possibility using population receptive field (pRF) mapping (Dumoulin and Wandell, 2008) in 6-to 12-year-old children and adults. We fitted pRF models to BOLD signals measured in areas V1-V4 and V3a during fMRI whilst participants watched wedge and ring stimuli traversing the visual field. Cortical magnification and the width of pRF tuning functions changed with viewing eccentricity in all participants. However, there were no age-related changes in pRF size, shape, cortical magnification, or map consistency across any of the visual areas measured. These results suggest that visuospatial perception in late childhood beyond age 6 years is not substantially limited by low-level spatial tuning properties of neuronal populations in visual cortex. Instead, performance improvements in this period may reflect more efficient use of the spatial information available in the visual system when forming perceptual judgments. These findings are an important step towards disentangling which neural mechanisms contribute to the eventual emergence of mature spatial vision, and for understanding the processes that determine the scope for visual plasticity at different stages of life. |
|
dc.publisher |
Cold Spring Harbor Laboratory |
|
dc.relation.ispartof |
bioRxiv |
|
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. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
dc.subject |
32 Biomedical and Clinical Sciences |
|
dc.subject |
51 Physical Sciences |
|
dc.subject |
3212 Ophthalmology and Optometry |
|
dc.subject |
Clinical Research |
|
dc.subject |
Pediatric |
|
dc.subject |
Eye Disease and Disorders of Vision |
|
dc.subject |
Neurosciences |
|
dc.subject |
1.1 Normal biological development and functioning |
|
dc.subject |
1.2 Psychological and socioeconomic processes |
|
dc.subject |
1 Underpinning research |
|
dc.subject |
Neurological |
|
dc.title |
Population receptive field tuning properties of visual cortex during childhood |
|
dc.type |
Preprint |
|
dc.identifier.doi |
10.1101/213108 |
|
dc.date.updated |
2024-06-27T02:33:58Z |
|
dc.rights.holder |
Copyright: The authors |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.elements-id |
1034306 |
|
pubs.org-id |
Medical and Health Sciences |
|
pubs.org-id |
Optometry and Vision Science |
|
pubs.record-created-at-source-date |
2024-06-27 |
|
pubs.online-publication-date |
2017-11-02 |
|