
How sleep shapes the developing Brain with Mark Blumberg I Infant sleep neuroscience I Podcast
From Reason with Science by Jitender Kumar
November 29, 2025 · 1h 24m · Season 86 · Episode 85
About this episode
The episode discusses how sleep influences brain development in infants with neuroscientist Mark Blumberg.
How sleep shapes the developing Brain with Mark Blumberg This conversation is with Mark Blumberg, a neuroscientist at the University of Iowa whose work has fundamentally reshaped how we understand infant sleep, movement, and early brain development. Mark’s research reveals that sleep is not a passive state, but an active, self-organizing process essential for building the brain’s earliest sensory and motor circuits.We begin by asking a basic yet surprisingly difficult question: What is sleep, really? Mark explains why defining sleep across development and across species is far more complex than it seems, and why the brain during sleep—especially during REM sleep—is often more active than during wakefulness.Together, we explore why infants spend so much of their early life in REM sleep, how sleep unfolds in distinct stages, and why the tiny, jerky movements known as sleep twitches are not meaningless byproducts of dreams, but powerful developmental signals that help wire the brain and body. We discuss how these movements contribute to building internal models of the body, how sleep supports plasticity and learning, and what happens when these processes are disrupted early in…
People in this episode
Host: Jitender Kumar
Guest: Mark Blumberg
Topics covered
- infant sleep
- neuroscience
- brain development
- REM sleep
- developmental disorders
Keywords
- sleep
- brain
- infants
- neuroscience
- development
- REM sleep
- plasticity
- movement
Mentioned in this episode
Organizations: University of Iowa
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