Can we create new senses for humans? | David Eagleman | Summary and Q&A

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TED
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Can we create new senses for humans? | David Eagleman

TL;DR

In this TED talk, neuroscientist David Eagleman explores the idea of expanding the human umvelt through sensory substitution and addition.

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Key Insights

  • 🌍 Our brains are not designed to understand reality at both the macro and micro scales, so we are limited to our own perception of the world. Our perception is also limited by our biology, as we can only see a small portion of the electromagnetic waves that exist.
  • 🐺 Different animals have different ways of perceiving the world, such as snakes detecting heat, honeybees seeing ultraviolet light, and bats using echolocation. This is called the umwelt, which describes the surrounding world that an animal can perceive.
  • 🧠 The brain is not actually "seeing" or "hearing" anything - it is locked inside the skull and only receives electrochemical signals. It can extract patterns and assign meaning to these signals to construct our subjective reality.
  • 🔌 The brain does not care where the data comes from and can adapt to new sensory inputs. Many scientists have successfully used sensory substitution to help blind or deaf individuals receive information through different channels, such as feeling vibrations or hearing sounds through their skin.
  • 💡 By expanding our umwelt through technology, we can potentially add new senses, such as feeling real-time data from the Internet or the stock market. This has the potential to greatly enhance our understanding and perception of the world.
  • 🌐 The possibilities for human expansion and the use of technology to add or enhance our senses are endless. This includes understanding the overall health of the International Space Station, sensing the invisible states of our own health, or experiencing expanded vision.
  • ✨ There is nothing fundamentally special about the biology we are born with, and we have the potential to redefine and expand our own sensory experiences. We now have the tools to go beyond what Mother Nature has given us and shape our own trajectory.

Transcript

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Questions & Answers

Q: How much of the electromagnetic radiation do we see?

We see less than a 10 trillionth of the electromagnetic radiation that is out there.

Q: Can animals perceive a different reality than humans?

Yes, different animals pick up on different parts of reality. For example, snakes include some infrared in their reality, while honeybees include ultraviolet.

Q: Can humans expand their umwelt?

Yes, humans can expand their umwelt through the use of technology. For example, sensory substitution devices can allow deaf people to understand sound through vibrations on their body.

Q: What is the potential impact of sensory substitution technology?

Sensory substitution technology has the potential to be a game-changer, as it can provide a cheaper and less invasive alternative to cochlear implants for the deaf. It can also be used to add completely new senses to humans, such as feeling real-time data from the internet or the emotional state of a crowd.

Summary & Key Takeaways

  • Humans are limited in their understanding of reality because our brains are not designed to perceive the world at different scales.

  • Our perception of reality is limited by our biology, and our brains only sample a small part of the world.

  • Sensory substitution and addition technology has the potential to expand our perception and allow us to experience the world in new and different ways.

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