There is an independent area of the human brain that controls the tone

researchers at the University of California, San Francisco, found that there is a separate area in the forehead of the human brain that controls the throat and adjusts the tone of speech and singing.
function of the throat is to make sounds and adjust tones. Humans are the only primates that can express their emotions and meanings by consciously controlling the tone. Previously, this ability was thought to be determined by the anatomical structure of the throat. But new research suggests that neuro activity may have played a key role in the evolution of muscle control in the throat, driving the development of human language.
, published today in the latest issue of the American journal
, showed that the "back-side larynx motor cortical layer" area between the areas of the brain's frontal leaf that controls the hands and mouth is associated with tone control. The researchers asked 12 volunteers to repeat the phrase "I never said she stole my money", each time changing the tone of a word to express emotions and semantics such as exclamation, condemnation, and inquiry. The researchers found that when the volunteers uttered the stressed words, the activity of the "back-side throat motor cortical layer" increased, suggesting that the area was associated with tone.
researchers say the brain regulates tone by controlling the muscles in the throat. As gas passes through the throat, people can control the speed at which the vocal band vibrates by adjusting the tension, just like the strings of a guitar, by shrinking the throat muscles to speed up the vibration, thus making different tones of sound.The next step for the
team plans to study whether the human brain can "reversely design" the process by which the human brain controls tones, that is, by observing neural activity, predicting the tone of the speaker's statement, and determining the meaning of the point they want to emphasize. (Source: Xinhua News Agency Zhou Zhou)