学进去

Do you prefer to write with your left hand? If you do, you are one of the millions of “lefties” in the world. To understand left-handedness, it is necessary to look at the brain. 1． In most right-handers, the right hemisphere (半球) controls how they understand broad, general ideas and how they respond to the five senses—sight, hearing, smell, taste, and touch. The left hemisphere is the center of language and logical thinking. 2．

The left hemisphere of the brain controls the right side of the body, and the right hemisphere controls the left side. Both sides of the body receive the same information from the brain because both hemispheres are connected. 3． In left-handed people, it is the right hemisphere that is stronger.

Different handedness causes differences in people. Although the left hemisphere controls language in right-handers, 40% of left-handers have the language center in the right hemisphere. The other 60% use the left side of the brain or both sides for language. 4． They are also more likely than right-handers to enjoy swimming underwater because left-handers can adjust more easily to seeing underwater.

Are you left-handed even though you write with your right hand? 5． Draw a circle first with one hand and then with the other. If you draw the circles clockwise (the direction the hands of a clock go in), you are probably left-handed. If you draw them counterclockwise (in the other direction), you are right-handed. The test does not always work, and some people draw one circle in one direction and the other circle in the other direction. But don’t worry if you are left-handed. You are in good companion.