O’Sullivan (1991) mengemukakan bahw

O’Sullivan (1991) mengemukakan bahwa musik mempengaruhi imaginasi, intelegensi dan memori, di samping juga mempengaruhi hipofisis di otak untuk melepaskan endorfin. Endorfin kita ketahui dapat mengurangi rasa nyeri, sehingga dapat mengurangi penggunaan obat analgetik, juga menurunkan kadar katekolamin dalam darah, sehingga denyut jantung menurun.
Penderita insomnia yang mendengarkan pianio klasik selama empat minggu mengalami perbaikan tidur. Terapi ini meningkatkan kadar melatonin, zat kimia otak yang mendorong tidur nyenyak.

Results (English) 1:

O'Sullivan (1991) suggests that music affects imagination, intelligence and memory, in addition also affects the pituitary gland in the brain to release endorphins. Endorphins we know can reduce the pain, therefore reducing drug use analgetik, also lowers levels of Catecholamines in the blood, so the heart rate decreases. Insomniacs who listened to classical pianio for four weeks experienced improvement of sleep. This therapy improves the levels of melatonin, a brain chemical which induces deep sleep.

Results (English) 2:

O'Sullivan (1991) suggested that music affects the imagination, intelligence and memory, in addition also affects the pituitary in the brain to release endorphins. Endorphins we know can reduce pain, thus reducing the use of analgesics, also reduce levels of catecholamines in the blood, so the heart rate decreases.
Patients with insomnia who listen to classical pianio for four weeks improved sleep. This therapy increases the levels of melatonin, a brain chemical that encourages restful sleep.