What is selective visual attention?

Selective visual attention allows one to receive a large amount of visual data from the environment, but to devote only a small part. A lot of information comes into the brain of a person through the eyes, so the brain processes only a small part and has decided to ignore the rest, which is known as inattentive blindness. Although the brain continues to receive data from the entire field of view at once, most of these data are ignored most of the time. Instead, selective visual attention reduces the focus of the field of vision on a smaller part of the total field so that one can focus on the details that are important at the moment.

There are two types of visual processing in the human brain. The first is called pre -processing and occurs throughout the whole field of a person at the same time. This type of processing allows one to notice changes in the environment. For example, the previous object suddenly began to move or object of a different color between objects of the same color attracts selective visual attention to a person. Evolutionary, this method of dataThe preliminary processing allowed people to survive in an enemy environment.

Once objects or objects are selected from the pre -processing data field, the person focused on it. This object becomes a focus of the eyes and a large part of the working memory is given. However, the pre -line field remains active and, if appears, a person can alert a different change in the environment. Attention can be focused by using access from top or bottom top. In the from top to bottom, deviations from the current environment cause selective visual attention, but in the bottom of the top, attention is focused on the basis of previous experience and long -term memory expectations.

When people pay their selective visual attention to one thing in their field of vision, it is possible to blind other objects or events that one can see. This occurs because the brain determines that these other things are not so importantIt is like anything at present. The scope of selective visual attention can be small as one level of the total field of vision. Scientists are not sure how many people can have.