Inner Cosmos with David Eagleman Ep 87 "How do we operate in the present when we perceive the past?"
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Jan 13, 2025 Explore how our brains process visual signals, making us slightly live in the past, yet still manage to catch a baseball. Discover the fascinating world of optical illusions and how our expectations shape perception. Unravel the concept of self-tickling and its surprising links to schizophrenia. Dive into the brain's predictive abilities, as it creates internal models to navigate reality despite sensory delays. Experience the interplay between motion and perception through relatable scenarios, like driving in a bustling city.
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Internal Models of Reality
- Our brains construct an internal model of reality, not a direct pixel-by-pixel representation.
- We only perceive something when incoming sensory data matches our brain's expectations.
Vision's Loop
- Vision involves loops, not just a one-way street from eye to brain.
- The brain compares its predictions with incoming data, highlighting the differences.
Self-Tickling
- Efference copies, internal copies of motor commands, allow us to predict our actions' outcomes.
- This explains why we can't tickle ourselves: the brain anticipates the sensation.