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Developmental dyscalculia is a neurodevelopmental disorder specific to arithmetic learning even with normal intelligence and age-appropriate education. Difficulties often persist from childhood through adulthood lowering the individual’s quality of life. However, the neural correlates of developmental dyscalculia are poorly understood. This study a...
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Context 1
... plotted correlation lines between math scores, tract length values (in "mm") and DTI derived indices are shown in Figure 5. As shown in Figure 5, FA values of the left SLF-temporal/AF seemed to be positively correlated with the mathematics test scores, whereas diffusivity values (AD, MD, and/or RD) of both the left SLF-temporal/ AF and left ATR tracts seemed to be negatively correlated with the mathematics test scores. ...
Context 2
... plotted correlation lines between math scores, tract length values (in "mm") and DTI derived indices are shown in Figure 5. As shown in Figure 5, FA values of the left SLF-temporal/AF seemed to be positively correlated with the mathematics test scores, whereas diffusivity values (AD, MD, and/or RD) of both the left SLF-temporal/ AF and left ATR tracts seemed to be negatively correlated with the mathematics test scores. The tract lengths of the left SLF-temporal/AF and left ATR tended to be positively correlated with the mathematics test scores. ...
Context 3
... we found a shorter left ATR in the DD group. When we examine the reconstructed left ATR between the groups (see Figure 4 and Supplementary Figure S5), the TD group appears to have more consistent tracts, whereas the DD group appears to have more irregular tracts that fan out to the prefrontal cortex (e.g., to the anterior, dorsolateral, and superior parts) and appear earlier in their course. We also compared the distances of the center of gravity coordinates of the two endpoints for a better understanding of the tracts' variations of the groups. ...
Context 4
... also compared the distances of the center of gravity coordinates of the two endpoints for a better understanding of the tracts' variations of the groups. Although the positions of the anterior thalamic endpoints of the ATR appear to be similar between the groups, the prefrontal endpoints appear to be more ventral-inferior in the TD group than in the DD (see Supplementary Figure S5, Supplementary Table S2, and Supplementary Note S5). The length of the maximum and especially the minimum tracts within the DD group's ATR bundle tend to be also shorter than the TD group (see Supplementary Note S4 for the minimum and maximum tract length values). ...
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Research suggests that children with developmental dyscalculia (DD) have deficits in basic numerical skills. However, there is conflicting evidence on whether basic numerical skills in children with DD are qualitatively different from those in typically developing children (TD) or whether basic numerical skills development in children with DD is si...
