Efficiency in Magnocellular Processing: A Common Deficit in Neurodevelopmental Disorders

Several neurodevelopmental disorders (NDDs) including Developmental Dyslexia (DD), Autism Spectrum Disorder (ASD), but not Attention Deficit Hyperactive Disorder (ADHD), are reported to show deficits in global motion processing. Such behavioral deficits have been linked to a temporal processing deficiency. However, to date, there have been few studies assessing the temporal processing efficiency of the Magnocellular M pathways through temporal modulation. Hence, we measured achromatic flicker fusion thresholds at high and low contrast in nonselective samples of NDDs and neurotypicals (mean age 10, range 7–12 years, n = 71) individually, and group matched, for both chronological age and nonverbal intelligence. Autistic tendencies were also measured using the Autism-Spectrum Quotient questionnaire as high AQ scores have previously been associated with the greater physiological amplitude of M-generated nonlinearities. The NDD participants presented with singular or comorbid combinations of DD, ASD, and ADHD. The results showed that ASD and DD, including those with comorbid ADHD, demonstrated significantly lower flicker fusion thresholds (FFTs) than their matched controls. Participants with a singular diagnosis of ADHD did not differ from controls in the FFTs. Overall, the entire NDD plus control populations showed a significant negative correlation between FFT and AQ scores (r = −0.269, p
Source: Frontiers in Human Neuroscience - Category: Neuroscience Source Type: research

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Scientists say current system for labelling children with difficulties is ‘too simple’Learning difficulties are not linked to differences in particular brain regions, but in how the brain is wired, research suggests.According to figures from the Department for Education, 14.9% of all pupils in England – about 1.3 million children – had special educational needs in January 2019, with 271,200 having difficulties that required support beyond typical special needs provision. Dyslexia, attention deficit hyperactivity disorder (ADHD), autism and dyspraxia are among conditions linked to learning dif ficult...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Neuroscience Dyslexia Attention deficit hyperactivity disorder Autism Health Education Society Schools Source Type: news
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Source: Neurochemical Research - Category: Neuroscience Authors: Tags: Neurochem Res Source Type: research
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Source: Child Abuse and Neglect - Category: Child Development Authors: Tags: Child Abuse Negl Source Type: research
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Source: Revista CEFAC - Category: Speech-Language Pathology Source Type: research
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Source: Cerebellum - Category: Neuroscience Authors: Tags: Cerebellum Source Type: research
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You can read the original post Digital Science’s Medium blog. Happy New Year! As we regret our former cheese-based life choices and get back into the swing of things, January is also a time to look forward and make resolutions. 2019 could be a year of great change and uncertainty. One topic never far from our minds is diversity and inclusion, specifically ensuring that ALL people are represented and heard. During this time of change, one way that we can achieve greater representation within research is to each commit to doing one small thing to change the current culture. On Saturday 3rd November 2018 we held a ...
Source: BioMed Central Blog - Category: General Medicine Authors: Tags: Uncategorized Diversity SpotOn SpotOn18 Source Type: blogs
You can read the original post Digital Science’s Medium blog. Happy New Year! As we regret our former cheese-based life choices and get back into the swing of things, January is also a time to look forward and make resolutions. 2019 could be a year of great change and uncertainty. One topic never far from our minds is diversity and inclusion, specifically ensuring that ALL people are represented and heard. During this time of change, one way that we can achieve greater representation within research is to each commit to doing one small thing to change the current culture. On Saturday 3rd November 2018 we held a ...
Source: BioMed Central Blog - Category: General Medicine Authors: Tags: Uncategorized Diversity SpotOn SpotOn18 Source Type: blogs
You can read the original post Digital Science’s Medium blog. Happy New Year! As we regret our former cheese-based life choices and get back into the swing of things, January is also a time to look forward and make resolutions. 2019 could be a year of great change and uncertainty. One topic never far from our minds is diversity and inclusion, specifically ensuring that ALL people are represented and heard. During this time of change, one way that we can achieve greater representation within research is to each commit to doing one small thing to change the current culture. On Saturday 3rd November 2018 we held a ...
Source: BioMed Central Blog - Category: General Medicine Authors: Tags: Uncategorized Diversity SpotOn SpotOn18 Source Type: blogs
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Source: Medgadget - Category: Medical Devices Authors: Tags: Pediatrics Psychiatry Rehab Source Type: blogs
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