The two types of movements considered during the pre-natal period and the first 3 months of post-natal life: hand to mouth (A and C) and hand to eye (B and D) performed by a fetus at 18 weeks of gestation and by a 3 month old infant.

<p>The two types of movements considered during the pre-natal period and the first 3 months of post-natal life: hand to mouth (A and C) and hand to eye (B and D) performed by a fetus at 18 weeks of gestation and by a 3 month old infant.