Normally, as kids learn to read, the visual word form area develops within the visual cortex, a large region of the brain’s “gray matter” located at the back of the head. The VWFA is a small part of the left side of the brain — ranging from pea-sized to about the size of a dime — that lights up on functional magnetic resonance imaging scans of the brain while people are reading. It has two subregions, one that responds to the shapes of words, and another that also responds to their meanings
Nearly every state in the U.S. passed some sort of dyslexia laws over the past decade. Most of these laws encourage or require schools to screen young children for reading difficulties, train teachers in evidence-based reading instruction and provide targeted support to students who show early signs of dyslexia.
NEW genetic analysis suggests dyslexia reflects vulnerability across broad brain networks rather than a single faulty gene, reshaping understanding of a condition affecting up to 20% of the global population.
To investigate the genetic basis of dyslexia, researchers systematically reviewed literature published over the past four decades and identified 175 candidate genes linked to reading difficulties. Using bioinformatic tools, the team examined evolutionary conservation, developmental gene expression, and functional networks. The analysis revealed that many dyslexia associated genes are highly conserved across species, indicating deep evolutionary roots. Importantly, developmental transcriptome data identified two distinct gene clusters separated by timing. One group is active early in fetal development and contributes to brain structure and wiring. The second group becomes active around 24 postconception weeks and supports synaptic signalling between neurons. Single cell analyses further showed cell type specific expression and protein interaction networks, suggesting coordinated biological pathways rather than isolated gene effects. These findings challenge the concept of reading specific genes and instead highlight dyslexia as a systems level condition.
A review of 40 years of genetic research suggests that dyslexia, a common learning disorder affecting reading ability, may not be caused by a single faulty gene but rather by vulnerabilities in broader brain networks. A psychology professor at the University of Houston presented this perspective, challenging long-held beliefs about the origins of dyslexia. The condition impacts up to 20% of the global population—approximately 780 million people—who experience persistent difficulties with reading throughout their lives.
A University of Houston psychology professor is challenging the notion that dyslexia, or specific reading disorder, stems from a single faulty gene in the brain, suggesting instead that it is caused by an overall brain network vulnerability. The insight reshapes understanding of one of the world’s most common learning disorders, which affects up to 20% of the world’s population—nearly 780 million people who face lifelong challenges with reading.
Parents often tell their children to sound out the words as they are learning to read. It makes sense: Since they already know how to speak, the sound of a word might serve as a clue to its meaning.
It turns out there’s a surprising and deep connection between what’s going on in your mouth and how your brain handles reading, and a University of Alberta research team hopes to use it to help people with dyslexia and other reading difficulties.
