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The Endowment for Human Development
The Endowment for Human Development
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Behavioral States


7 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Script: During the last 4 months of pregnancy, the fetus displays periods of coordinated activity punctuated by periods of rest. These behavioral states reflect the ever-increasing complexity of the central nervous system.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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Fetus Appears Less Wrinkled
Fetus Appears Less Wrinkled
Sound Discrimination
Sound Discrimination
Behavioral States
Behavioral States
4D Ultrasound
4D Ultrasound
4D Ultrasound
4D Ultrasound
Breathing Movements
Breathing Movements
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