eLife Assessment
This important study details changes in the brain functional connectivity in a longitudinal cohort of Gambian children assessed outside a lab setup with functional near-infrared spectroscopy (fNIRS) from age 5 to 24 months, in relation to early physical growth and cognitive flexibility capacities at preschool age. While evidence supporting conclusions on the evolution of brain connectivity are solid, the statistical power was insufficient to perform proper analyses of longitudinal data and link the connectivity trajectories with early adverse conditions such as undernutrition and later cognitive development. This study will be of significant interest to neuroscientists, psychologists and neuroimaging researchers working on infant development in relation to environmental factors.