We all have lost experiences. Fortunately, the special cells in the animal's brain that help to recognize the path are now found in humans for the first time. This discovery may permit better treatment for people who have difficulty recognizing the road.
We know that animals use three types of cells to recognize the path. When the animal is facing a particular direction, the directional cells will be stimulated. When an animal is in a particular location, its location cells are activated. As it moves around, grid cells are regularly fired.
Scientists have discovered the direction and location of cells in humans, but the signs of presence of grid cells are only revealed during some brain scans.
To explore whether these cells actually exist in the human brain, Joshua Jacobs and colleagues at Drexel University in the United States tested 14 volunteers. These volunteers have implanted electrodes in the brain to treat epilepsy.
The researchers asked volunteers to play a computer game to record the activity of a series of single cells in their brains. In this computer game, volunteers drive in open spaces, they search for objects and remember where they found the objects. Then they must determine the location of these objects again as soon as possible, but this time, unless the volunteers arrive at the right destination, they will not be able to see them.
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