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Huberman Lab #265 · January 26, 2026 · 2h 10m

Science & Tools of Learning & Memory

David Eagleman
YouTube

Stanford neuroscientist David Eagleman on neuroplasticity, memory formation, time perception, and sensory substitution. Key insight: the brain is not a fixed organ but a 'livewired' system that constantly rewires based on experience. Memory is reconstructive, not reproductive — every recall subtly changes the memory.

This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.

Highlights

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The brain is 'livewired' — it constantly rewires based on experience
Eagleman: unlike hardware that's fixed at manufacture, the brain physically restructures itself in response to what you do, think, and practice. This 'livewiring' continues throughout life.
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Memory is reconstructive, not reproductive — every recall changes the memory
Eagleman: memories are not recordings. Each time you recall an event, you reconstruct it from fragments and rewrite it with current context. Frequently recalled memories are the most altered.
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Time perception slows during novel and fearful experiences
Eagleman's research: time doesn't actually slow down during frightening events. Instead, the brain encodes more memory data, and more data in retrospect feels like more time passed.
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Diverse experience builds better brains than narrow specialization
Eagleman: the brain benefits more from varied inputs than from deep repetition of one skill. Exposure to diverse challenges builds more flexible, creative neural networks.
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References

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Livewired — David Eagleman (2020) — Eagleman's framework for understanding brain plasticity

Misc

✧Eagleman created Neosensory — a wristband that translates sound to touch patterns, letting deaf people 'hear' through their skin
✧His work on time perception involved actually dropping people from 150 feet to test whether fear slows time
✧Eagleman's dream research suggests REM sleep may exist to defend the visual cortex from being colonized by other senses during darkness
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