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Summary information

Study title

Population receptive field tuning properties of visual cortex during childhood 2016-2019

Creator

Dekker, T, University College London
Schwarzkopf, S, University of Auckland
de Haas, B, Justus Liebig University
Nardini, M, Durham University
Sereno, M, San Diego Sate University

Study number / PID

854114 (UKDA)

10.5255/UKDA-SN-854114 (DOI)

Data access

Open

Series

Not available

Abstract

The aim of this study was to investigate if spatial tuning functions of populations of neurons in visual cortex are adult-like or are still developing / becoming more precise from the age of 6 years onward. We found no significant differences in pRF tuning properties. There are many reports of improved precision of basic visual visuospatial perception in childhood, but it is unclear to which extent this depends on greater precision of information in the system, or more efficient read-out of this information by higher-order brain areas that form decisions and responses. Results from pRF model fits combined with cortical surface measures are reported here.

There are many reports of improved precision of basic visual visuospatial perception in childhood, but it is unclear to which extent this depends on greater precision of information in the system, or more efficient read-out of this information by higher-order brain areas that form decisions and responses. The aim of this study was to investigate if spatial tuning functions of populations of neurons in visual cortex are adult-like or are still developing / becoming more precise from the age of 6 years onward.

Topics

Science and technologyHealthPsychology

Keywords

FUNCTIONAL MAGNETIC RESONANCE IMAGINGCHILD DEVELOPMENT (ELSST)VISION (ELSST)SPATIAL VISIONPOPULATION RECEPTIVE FIELDS2020

Methodology

Data collection period

01/01/2016 - 31/08/2019

Country

United Kingdom

Time dimension

Not available

Analysis unit

Individual

Universe

Not available

Sampling procedure

Not available

Kind of data

Numeric

Data collection mode

Sample: We tested 13 children aged 6-9 years (mean age = 8.7 (SD=0.8)), 17 children aged 9-12 years (mean age = 11.4 (SD=0.7)), and 7 adults (mean age = 11.4 (SD=0.7)). These all had normal or corrected to normal vision, and no known neurological abnormalities. They were recruited via local data-bases of volunteers, so this was an opportunity sample.Design and Procedure: We measured functional MRI BOLD responses whilst children and adults viewed a simultaneous ring and wedge-shaped checkerboard traversing the screen they were viewing in the scanner (~14 degrees eccentricity). We then fit the BOLD response in the visual cortex with pRF two different types of pRF models, a bivariate gaussian (mu and sigma), and a difference of Gaussian (mu (centre), sigma1 (surround), sigma2 (suppression)). We also computed for each voxel in visual cortex what the eccentricity and polar angle were. We used polar angle to manually delineate retinotopic regions of interest (V1, V2v & V2d, V3v, V3d, V3a, V4). We computed cortical magification factor for each voxel.

Funding information

Grant number

ES/N000838/1

Access

Publisher

UK Data Service

Publication year

2020

Terms of data access

The Data Collection is available to any user without the requirement for registration for download/access.

Related publications

Not available