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. 2020 Feb 26;14:49. doi: 10.3389/fnhum.2020.00049

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Copyright © 2020 Brown, Peters, Parsons, Crewther and Crewther.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Group means and standard errors for flicker fusion thresholds (FFTs) at low (5%) and high (75%) luminance modulation. Autism spectrum disorder (ASD; A) and developmental dyslexia (DD; B) both show significantly lower FFTs compared to their matched controls, while no group difference was found in (C) attention deficit hyperactive disorder (ADHD). Comorbid ASD/ADHD and DD/ADHD (D) with their matched controls (indicated by shared symbols). Separate comparison analyses of these matched groups showed both comorbid groups have significantly lower FFTs than matched controls.