Sensory tone deafness

...The cause of tone deafness is said to be a malfunction due to developmental disorder of the music center presumably in the right hemisphere of the brain, and is thought to be due to both genetics and the environment, but it remains medically unsolved. Tone deafness is broadly divided into sensory tone deafness and motor tone deafness. The former refers to a state in which the perception of pitch and rhythm is impossible due to a disorder in the recognition, comprehension, and memory of music, while the latter refers to a state in which singing is out of tune due to a disorder in the motor integration center that assembles patterns of continuous changes in pitch. ...

*Some of the terminology explanations that refer to "sensory tone deafness" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…音痴の原因は，大脳右半球に推定される音楽中枢の発育障害による機能不全であるとされ，遺伝と環境の双方に起因するものとみられているが，医学的には未解決である。音痴は感覚性音痴と運動性音痴に大別される。前者は，音楽の認知，理解，記憶に障害があるために音高やリズムの感受そのものが不可能な状態を言い，後者は，音高の連続的変化のパターンを組み立てる運動統合中枢に支障があるため，歌うと調子はずれになるものを言う。…

※「感覚性音痴」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報