In a Presidential System, the head of state and head of government tends to be the same person. In a Parliamentary System, minority groups can form third, fourth, and fifth parties and have much more influence in government than in a Presidential System where third parties are marginalized (many complexities here).
EMGs can detect abnormal muscle electrical activity in many diseases and conditions, including inflammation of muscles, pinched nerves, damage to nerves in the arms and legs, disc herniation, and degenerative diseases such as muscular dystrophy, Lou Gehrig's disease and Myesthenia gravis, among others.
Electromyography (EMG) helps detect possible abnormalities in the human body by recording electrical impulses created by muscular activity for medical analysis. There are two general types of EMG machine: surface and intramuscular. Surface EMG detects activity through electrodes placed on the surface of the skin. An intramuscular EMG machine, on the other hand, detects activity through needles inserted directly into the muscle. The degree of invasiveness and resulting sensitivity of the two methods allow for different medical applications.