About this episode
Matt discusses the importance of sound during sleep and its implications for safety and memory.
Matt returns today to explain why humans didn't evolve for silent sleep. Citing the Hadza and the brain's "open microphone," he explains how we process sound for safety even while resting. He details the "first-night effect," where half the brain stays alert in new environments, demonstrating that our ears never truly switch off. Our host weighs the benefits of noise machines for memory against the risks of dream sleep suppression. He offers evidence-based tips for parents and travelers on ...
People in this episode
Host: Matt Walker
Topics covered
- sleep
- sound
- safety
- memory
- dream sleep
- noise machines
Keywords
- sleep
- sound processing
- first-night effect
- noise machines
- dream sleep suppression
- safety
Mentioned in this episode
Organizations: Hadza
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