RTU is the basic unit of da system, and its function, number, precision and reliability of data collection affect the reliability of da system directly.

The opium drugs affect the mesencephalic limbic DA system directly or indirectly as well as other dependence drugs, and ultimately alter the DA level in the NAc to mediate the awarding effects.

Advertised as minimally invasive surgery, the da Vinci system is meant to be used by a surgeon who operates using robotic arms while looking into a monitor.