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000873603 1001_ $$00000-0001-8757-0783$$aPeyre, Hugo$$b0$$eCorresponding author
000873603 245__ $$aNeuroanatomy of dyslexia: An allometric approach
000873603 260__ $$aOxford [u.a.]$$bBlackwell$$c2020
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000873603 520__ $$aDespite evidence for a difference in total brain volume between dyslexic and good readers, no previous neuroimaging study examined differences in allometric scaling (i.e. differences in the relationship between regional and total brain volumes) between dyslexic and good readers. The present study aims to fill this gap by testing differences in allometric scaling and lobar brain volume differences in dyslexic and good readers. Object-based morphometry analysis was used to determine grey and white matter volumes of the 4 lobes, the cerebellum, and limbic structures in 130 dyslexic and 106 good readers aged 8 to 14 years. Data were collected across three countries (France, Poland, and Germany). Three methodological approaches were used: Principal Components Analysis (PCA), linear regression, and Multiple Group Confirmatory Factor Analysis (MGCFA). Difference in total brain volume between good and dyslexic readers was Cohen's d=0.39. We found no difference in allometric scaling, nor in regional brain volume between dyslexic and good readers. Results of our three methodological approaches (PCA, linear regression and MGCFA) were consistent. This study provides evidence for total brain volume differences between dyslexic and control children, but no evidence for differences in the volumes of the four lobes, the cerebellum or limbic structures, once allometry is properly taken into account. It also finds no evidence for a difference in allometric relationships between the groups. We highlight the methodological interest of the MGCFA approach to investigate such research issues.
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000873603 7001_ $$0P:(DE-HGF)0$$aMohanpuria, Neha$$b1
000873603 7001_ $$0P:(DE-HGF)0$$aJednoróg, Katarzyna$$b2
000873603 7001_ $$0P:(DE-Juel1)131644$$aHeim, Stefan$$b3
000873603 7001_ $$0P:(DE-HGF)0$$aGrande, Marion$$b4
000873603 7001_ $$0P:(DE-Juel1)156512$$avan Ermingen-Marbach, Muna$$b5
000873603 7001_ $$0P:(DE-HGF)0$$aAltarelli, Irene$$b6
000873603 7001_ $$0P:(DE-HGF)0$$aMonzalvo, Karla$$b7
000873603 7001_ $$0P:(DE-HGF)0$$aWilliams, Camille$$b8
000873603 7001_ $$0P:(DE-HGF)0$$aGermanaud, David$$b9
000873603 7001_ $$0P:(DE-HGF)0$$aToro, Roberto$$b10
000873603 7001_ $$0P:(DE-HGF)0$$aRamus, Franck$$b11
000873603 773__ $$0PERI:(DE-600)2005178-5$$a10.1111/ejn.14690$$gp. ejn.14690$$n6$$p3595-3609$$tEuropean journal of neuroscience$$v52$$x1460-9568$$y2020
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