Identification of a novel link between adiposity and visuospatial perception
Authors' conclusion
These results demonstrate a selective deficit in line orientation perception associated with adiposity and blunted activation in the V1 that cannot be attributed to visual acuity and does not generalize to other visuospatial tasks.
Study context
- Population
- Individuals with healthy weight or overweight/obesity; assessment of visual functionfMRI n = 27
- Participants
- 80 individuals
- Comparison
- Overweight/obesity vs healthy weight
- OW/OBn = 40
- Healthy weight (HW)n = 40reference
- Outcome
- Performance on line orientation judgment (Penn Line Orientation Task)
Methodological detailsfunctional MRI subgroup
- Functional MRI subgroup
Main finding
As reported in the abstract
Line orientation judgment performance
- OW/OB performed worse than HW on tasks requiring judgments of line orientation
- Effect mediated by body fat percentage and unrelated to other measures
Observational data: associations, not effects.
Further findings
fMRI response in primary visual cortex (V1)
- Negative association between BMI and V1 response during line orientation judgment
- Performance unrelated to V1 response but positively correlated with response in a network incl. lateral occipital cortex, with BMI in the model
Original publication
Identification of a novel link between adiposity and visuospatial perception. Obesity (Silver Spring). Published 22 December 2022. doi:10.
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