| Eye Opening | No response To pain To speech Spontaneous |
| Best motor response | No response Extension (decerebrate) Flexion (decorticate) Withdraws to pain Localizes to pain Obeys verbal command |
| Best verbal response | No response Incomprehensible sounds Inappropriate words Disoriented speech Oriented speech |
Score can range from 3 (lowest neurological function) to 15 (highest function).
Score 13-15: Mild TBI
Score 9-12: Moderate TBI
Score 8 or less: Severe TBI