There are several scales used to describe the level of response in patients with brain injury.
In acute care the Glasgow Coma Scale is often used. The Glasgow Coma Scale rates eye opening, motor movement (movement of the arms and legs), and verbal response.
4 = Spontaneously
3 = To voice
2 = To pain
1 = No response
6 = Follows commands
5 = Localizes to pain
4 = Withdrawal to pain
3 = Decorticate
2 = Decerebrate
1 = No Response
5 = Oriented and converses
4 = Disoriented and converses
3 = Inappropriate words
2 = Incomprehensible sounds
1 = No response
Rehabilitation centers may use a scale called the Rancho Levels. The Rancho scale measures levels of cognitive or mental functioning.