The intricate relationship
between brain maturation and cognitive development in children has been
previously investigated by measuring brain hemodynamic activity with functional
magnetic resonance imaging during performance of a variety of mathematical and
conceptual tasks. While these studies have produced vast amount of knowledge
on maturation of cognitive abilities, it has remained to a large extent an open
question how development of cognitive abilities shapes the way that the
developing brain responds to real-life like stimuli such as movies, for example, whether school-based
knowledge of mathematics shapes the way that children process educational videos
involving math problems.
To answer this question, Drs. Jessica
Cantlon and Rosa Li (2013) presented children and adults an episode of the
educational TV-program Sesame Street during functional magnetic resonance
imaging. They then correlated the hemodynamic data of individual children with
the data of adult participants to derive an index of brain maturation. Their
results show in a very convincing manner how increasing similarity between
hemodynamic responses of children and adults under the natural viewing
conditions predicts the degree that mathematical ability has developed in the
children. The right intraparietal sulcus was especially implicated by their
analyses as a brain structure wherein maturation (i.e., adult-likeness) of
functional brain activity predicts school-based mathematical ability. They
further verified the involvement of this brain region in numerical processing using a more
conventional functional magnetic resonance imaging experiment, however,
interestingly only the measures of the natural viewing paradigm significantly
predicted the children’s school based mathematical performance.
These highly exciting findings further demonstrate the complementary nature of the natural viewing paradigms that are
becoming increasingly frequent in cognitive neuroscience. The approach
where an index of brain functional maturity is derived in a straightforward and
model free manner by correlating hemodynamic response time courses across brain
regions between children and adult participants during free viewing of movie clips is one that can be easily
foreseen as paving way, in a fundamentally important manner, for further neurocognitive development studies.
Reference: Cantlon JF, Li R. Neural activity during natural viewing
of Sesame Street statistically predicts test scores in early childhood. PLoS Biology
(2013) 11: e1001462. http://dx.doi.org/10.1371/journal.pbio.1001462
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