We are often told to pay attention to what our mothers tell us. Most of us enjoy listening to our mothers speak. Scientists have found that compared with other people's voices, our brains greatly prefer the voices of our own mothers.
Scientists at Stanford University, US, recently studied this. "They scanned（扫描） children's brains while they were listening to different sounds, including their mothers voices. They found that 97 percent of the time, children could recognize（辨别）their mothers' voices at once.
Hearing their mothers' voices makes children's brains more active. We usually just use one part of our brain to deal with sounds when we hear something. But when we hear our mothers voices, many parts of the brain, including those in charge of（负责）reward（奖励）and feeling, start to work as well.
Why do we react so strongly to our mothers' voices? It starts even before we're born When children are still in the womb（子宫）or have just been born, they hear their mothers：talking, which makes babies feel comfortable and excited. Mothers' talking also teaches them language and social skills, though they are still very young. The babies learn to recognize their mothers' voices as a rewarding sound. Later, when this sound is heard again, more attention is paid to it.
Some sounds are necessary and can bring us happiness. These sounds are recognized by our brains as rewarding sounds. Most of the voices are not recognized in this way, but mothers' voices are different.They are more wonderful than any other voice around us.
