Researchers found a way to Control thoughts with brain waves, In a new study, researchers found that people can increase their attention by controlling their alpha brain waves based on the neuro field they receive when performing certain tasks.
The study found that subjects who learned to suppress alpha waves in their parietal cortex hemispheres could better observe objects that appeared on opposite sides of their visual fields.
This is the first time this cause-and-effect relationship has observed, and it shows that people can learn to increase their attention through neurofeedback.
There is interest in using neurofeedback to help people with various brain disorders and behavioral problems, the researchers said.
It is unknown how long this effect can last and whether this type of control can be achieved with other types of brain waves, such as beta waves, which associated with Parkinson’s disease.
Researchers are now planning more studies to determine whether this type of neurofeedback training can help people with attention or other neurological disorders.
There are billions of neurons in the brain and their combined electrical signals create vibrations known as brain waves. It believed that alpha waves, ranging from 8 to 12 Hz, play a role in filtering scattered sensor information.
Previous research has shown a strong correlation between attention and alpha brain waves, especially in the parietal cortex.
In humans and animals, the reduction in alpha waves associated with caution. But ever, it is not clear whether alpha waves control attention or are a by-product of other processes that control attention.
To test whether alpha waves regulate attention, researchers have created experiments that give people real-time feedback about their alpha waves while doing assignments.
Subjects asked to see the grid pattern in the center of the screen and instructed to increase the contrast of the pattern as they are seen to make it more visible.
During the assignment, subjects scanned using Magnetic Encephalography (MEG), which shows brain activity to the nearest millisecond. The researchers measured alpha values in the left and right hemispheres of the parietal cortex and calculated the level of asymmetry between the two values.
With increasing asymmetry between the two hemispheres, the lattice model becomes more visible and provides real-time feedback to participants.
Although the participants were not told anything about the incident, after about 20 attempts (which lasted about 10 minutes) they were able to increase the contrast of the pattern. MEG results show that they do this by controlling their alpha wave asymmetry.
Although subjects are not aware of how they manipulate their brain waves, they can do so, and this success intensified from the other side of the field of view. When subjects saw a pattern in the center of the screen, the researchers emitted dots of light from both sides of the screen.
The participants must ignore these flashes, but the researchers measure how their visual cortex responds to them.
One group of participants trained to suppress alpha waves on the left side of the brain while another trained to suppress the right side. For those with less alpha on the left, the visual cortex responds more to lightning on the right side of the screen, while those on the right have less alpha, responding closer to lightning on the left.
In other assignments, participants must consider drawings as open landscapes, city views, or computer-generated fractal shapes. By tracking the movements of the researchers’ eyes, the researchers found that people spent more time looking at pages that they had been aware of by alpha waves.
It would be interesting to know how long these effects last and whether they can be used as therapy because there is evidence that alpha-oscillations are different in people with attention-deficit hyperactive disorders, the researchers said. If this is the case, you can at least in principle use this neurofeedback method to attract your attention.