"tone blindness", also called "aphonia", refers to the complete inability to recognize tone, speed of sound, pitch, rhythm, etc.
intonation can change the meaning of a sentence, but people with agraphia can't distinguish intonation, but can only rely on the situation or body language to identify the meaning that the speaker wants to express. There is a certain relationship between aphonia and heredity and early development. Some of them can be corrected by pronunciation training, while others need further treatment.
influencing factors
1. Normal music cognition may be related to the circuit of mastering language tones in the brain. In addition, patients with agraphia have poor spatial processing ability. For example, give them photos of buildings taken from different angles, and they can't tell that the photos are the same building. Researchers speculate that this may be related to the development of their right brain.
2. Perlitz's research team scanned the brains of patients with aphonia. At present, they have found that the white matter of a brain area of patients with aphonia is slightly different from that of ordinary people, which is related to distinguishing pitch and memorizing melody. Researchers are still looking for the genetic gene that causes aphonia.
3. Aphasia has become one of the main research topics for scientists to understand how the brain handles the mystery of music. With the deepening of research, those who can't enjoy music normally may regain the pleasure brought by music.
the above content reference: Baidu Encyclopedia-song loss.