Which fetal behavioral state is characterized by decreased baseline variability?

The fetal behavioral state characterized by decreased baseline variability is quiet sleep. During this state, fetuses exhibit minimal movement and lower heart rate variability, which reflects a calm and restful condition. This is an important aspect of fetal development, as quiet sleep is associated with periods of rest and consolidation of brain activity.

In contrast, other states such as active sleep and awakening are characterized by increased movement and variability in heart rate, highlighting heightened activity and engagement. Understanding these behavioral states is crucial for interpreting fetal heart rate patterns and assessing overall fetal well-being.