The Human Connectome Project 7 Tesla retinotopy dataset: Description and population receptive field analysis.
Level 4 - case-series / case-control
Descriptive cross-sectional neuroimaging resource and model-fitting study without a comparator group
PubMed 30593068 · doi:10.1167/18.13.23
What was done
Ultrahigh-field (7 Tesla) functional magnetic resonance imaging (fMRI) retinotopic mapping was performed at 1.6-mm resolution in 181 healthy young adults viewing spatially modulated visual stimuli as part of the Human Connectome Project. Population receptive field position and size were estimated across cortical and subcortical areas using model-based analyses applied to both individual-subject time series and group-averaged data, with within-subject reliability evaluated via split-half analyses.
What was found
The abstract reports no numerical values, test statistics, or quantitative reliability coefficients. Model-based analyses identified signals across occipital, temporal, parietal, and frontal cortex as well as subcortical regions in both individual and group-averaged data, showing alignment with previously published visual area parcellations and strong split-half within-subject reliability.
Why it matters
This study provides an open-access, ultrahigh-field retinotopy dataset and modeling resource from 181 individuals, facilitating research on individual variability in visual cortex organization and integration with other multimodal connectome measures.
Limits
The abstract provides no quantitative metrics or effect sizes. The sample is restricted to healthy young adults, limiting generalizability across older ages or clinical populations, and describes a cross-sectional dataset without experimental control groups.
Cited by
- contradicts Roughly half of cortical activity in the human brain is involved in visual function.