Malfunctioning brain ‘hubs’ could be responsible for dyslexia, ADHD

cnlm uci
Credit: UCI

Different learning difficulties do not, as previously thought, correspond to specific regions of the brain, new British research suggests.

Instead, says a team from the University of Cambridge, poor connectivity between “hubs” within the brain is much more strongly related to children’s difficulties.

Scientists have struggled to identify areas of the brain that might give rise to learning difficulties such as dyslexia, dyscalculia and developmental language disorder, or to developmental disorders such as attention deficit and hyperactivity disorder (ADHD).

Perhaps, the Cambridge team suggests somewhat provocatively, that’s because there are none.

To test this hypothesis, Duncan Astle and colleagues used machine learning to map the brain differences across 479 children: 337 referred with learning-related cognitive problems and 142 from a comparison sample.

Related article:  Coping with death: Our brains are wired to think it only happens to other people

[T]hey found the children’s brains were organised around hubs, like an efficient traffic system or social network. Those who had well-connected brain hubs had either very specific cognitive difficulties, such as poor listening skills, or had no cognitive difficulties at all.

By contrast, those with poorly connected hubs had widespread and severe cognitive problems.

The findings also may explain why drugs treatments have not been effective for developmental disorders, the researchers say.

Read the original post

Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Infographic: What are mRNA COVID-19 vaccines and how do they work?

Infographic: What are mRNA COVID-19 vaccines and how do they work?

As of 1 December 2020, thirteen vaccines have reached the final stage of testing: where they are being given to ...

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

Optional. Mail on special occasions.
Send this to a friend