At what age range is hypnagogic hypersynchrony most prominent?

Hypnagogic hypersynchrony is a developmental phenomenon observed primarily during the transition from wakefulness to sleep, particularly in young children. It is characterized by synchronized bursts of activity in the EEG that often appear as high-amplitude spike and wave complexes. The age range of 2-6 years old is when children's brain activity is particularly dynamic as they transition through various stages of cognitive and neurological development.

During this period, the brain's maturation processes promote the emergence of sleep patterns and the establishment of neural connections that facilitate the onset of sleep. Thus, hypnagogic hypersynchrony is typically most pronounced in children within this developmental window. This phenomenon usually diminishes as individuals grow older and their sleep architecture evolves into more mature patterns, leading to a decline in the prominence of these patterns after early childhood.