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Myowa-Yamakoshi, Masako; Takeshita, Hideko – Infancy, 2006
Using four-dimensional (4D) ultrasonography, arm and hand movements toward the face were examined in 27 human fetuses at 19 to 35 weeks of gestation, thereby enabling the continuous monitoring of their faces and other surface features such as the extremities. More than half of the observed arm movements resulted in the hand touching the mouth…
Descriptors: Pregnancy, Motor Reactions, Infant Behavior, Human Body