Order of evolution | Function | Motor response |
1. Antigravity postures | Resist against gravity | Primitive movements generated by central pattern generators in brainstem and spinal cord |
2. Programmed patterns | Feeding and locomotion | Withdrawal to pain |
3. Extremity movement | Targeting and grabbing | Localize to pain |
4. Skilled digit movements | Dexterity and manipulation | Obeys command |