Mar 25, 2020

Atypical brain asymmetry in autism - a candidate for clinically meaningful stratification

BioRxiv : the Preprint Server for Biology
Dorothea Lilli FlorisC. F. Beckmann

Abstract

Background: Autism Spectrum Disorder (henceforth autism) is a highly heterogeneous neurodevelopmental condition with few effective treatments for core and associated features. To make progress we need to both identify and validate neural markers that help to parse heterogeneity to tailor therapies to specific neurobiological profiles. Atypical hemispheric lateralization is a stable feature across studies in autism, however its potential of lateralization as a neural stratification marker has not been widely examined. Methods: In order to dissect heterogeneity in lateralization in autism, we used the large EU-AIMS Longitudinal European Autism Project dataset comprising 352 individuals with autism and 233 neurotypical (NT) controls as well as a replication dataset from ABIDE (513 autism, 691 NT) using a promising approach that moves beyond mean-group comparisons. We derived grey matter voxelwise laterality values for each subject and modelled individual deviations from the normative pattern of brain laterality across age using normative modeling. Results: Results showed that individuals with autism had highly individualized patterns of both extreme right- and leftward deviations, particularly in language-, motor- and visuospatial...Continue Reading

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Mentioned in this Paper

Trees (plant)
Tooth Crowding
Visual Perception
Limb Structure
Structure of Subclavian Artery
Aves
Structure
Entire Limb

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