WHY DON’T THEY READ ANYTHING?
Every tenth person on the planet suffers from dyslexia. That’s about 700 million people.
Dyslexia usually means an inability to read, while other mental functions are preserve. This is often explained both by genetics and environment, and it turns out that it is inherited, associated with ADD, and/or brain trauma, as well as stroke and dementia.
In France, however, it seems that a new possible cause has been discovered, and it’s avoidable. It hides in the tiny photo-receptors of the human eye. These cells, in people with dyslexia, are arranged in the same pattern in both eyes, which confuses the brain and creates a mirrored effect.
In people without dyslexia, they are arranged asymmetrically, which allows signal from one eye to supplement signal from the other, eventually constructing a single image in the brain.
This discovery has a rather simple method of diagnosis.
Moreover, the delay between the primary and mirror images (a few thousandths of a second) in different hemispheres of the brain make it possible to develop a method for erasing that mirror image, which is what causes the brain to stumble.
Just as there are right-handed and left-handed people, there is also a dominant eye. Since most of us have a pair of eyes that offer the brain several different versions of the same image, it has to choose one of the two.
Most people are right-eye dominant, so it has more nerve connections with the brain than their left. Signals from the outside world are captured by rods and cones in the eye, the latter of which is responsible for color.
Most cones (red, green, and blue variants) are located in a small area in the center of the retina known as the fovea. But there is a small area in there without blue cones.
Don’t fall asleep yet – we’ve come to the main point! It turns out that people with dyslexia and those without have cones located in different ways.
In people without dyslexia, the zone without blue cones in the dominant eye is round, while this area in the other eye has an irregular shape. Those with dyslexia have an equally round zone in both, which implies that neither eye is dominant.
Nature – a huge trickster, but for every trickster there’s…
It’s the price of democracy, you might say. Even with just two eyes, a leader is needed.
This lack of asymmetry may be the anatomical basis for reading disorders, spelling problems, and the like.
Dyslexics perform “mirroring errors” when reading – for example, confusing the letters b and d.
So what can we do about this? Scientists used an LED lamp that flashes so fast it’s invisible to the naked eye, and it “cancels” that mirror image in the brain of dyslexics when they are reading. What do they say about it? They describe the lamp as “simply magical”, and it works.