Vestibular: Week 21 – Maintain State, Balance, Rest, Motion, Stability. Auditory: Week 24 – System is structurally complete and functional Tactile: Week 26 – Primitive tactile reflexes, rooting is present Gustatory: Week 26-28 – Withdrawl to bitter taste

Vestibular: Week 21 – Maintain State, Balance, Rest, Motion, Stability.
Auditory: Week 24 – System is structurally complete and functional
Tactile: Week 26 – Primitive tactile reflexes, rooting is present
Gustatory: Week 26-28 – Withdrawl to bitter taste