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- Title
Aberrant spatiotemporal activation profiles associated with math difficulties in children: a magnetic source imaging study.
- Authors
Simos, Panagiotis G; Kanatsouli, Kassiani; Fletcher, Jack M; Sarkari, Shirin; Juranek, Jennifer; Cirino, Paul; Passaro, Antony; Papanicolaou, Andrew C
- Abstract
The study investigates the relative degree and timing of cortical activation in parietal, temporal, and frontal regions during simple arithmetic tasks in children who experience math difficulties. Real-time brain activity was measured with magnetoencephalography during simple addition and numerosity judgments in students with math difficulties and average or above average reading skills (MD group, N = 14), students with below average scores on both math and basic reading tests (MD/RD group, N = 16) and students with above average scores on standardized math tests (control group, N = 25). Children with MD showed increased degree of neurophysiological activity in inferior and superior parietal regions in the right hemisphere compared to both controls and MD/RD students. Left hemisphere inferior parietal regions did not show the expected task-related changes and showed activity at a significant temporal delay. MD students also showed increased early engagement of prefrontal cortices. Taken together, these findings may indicate increased reliance on a network of right hemisphere parietal (and possibly frontal areas as well) for simple math calculations in students who experience math difficulties but perform within normal range in reading.
- Publication
Neuropsychology, 2008, Vol 22, Issue 5, p571
- ISSN
0894-4105
- Publication type
Journal Article
- DOI
10.1037/0894-4105.22.5.571