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Published Feb 25, 2021

474: David Eagleman | The Inside Story of the Ever-Changing Brain

Neuroscientist David Eagleman reveals the brain's remarkable adaptability in shaping our reality, exploring groundbreaking sensory technologies and how their integration changes human perception, while unraveling the interplay between dreams, hallucinations, and sensory evolution.
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  • Sensory Tech

    discusses the potential of sensory technology to enhance human perception. He explains how devices like NeoSensory's wristband can help individuals with autism understand emotions through vibrations, and how such technology could be used by professionals like firefighters to detect people in smoke-filled environments 1. This technology leverages the brain's ability to adapt to new sensory inputs, allowing for the creation of new senses such as night vision or thermal vision 2.

    Your body is covered with this incredible computational device of your skin. Your skin is actually the largest organ in your body, and we don't use it for much of anything in modern life. And so it's a terrific channel for pushing data.

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    Eagleman emphasizes that the brain can learn to interpret these new inputs, effectively creating new sensory experiences.

       

    Mind Control

    Eagleman explores the concept of mind control, where thoughts alone could control external devices. He notes that while current technology allows for basic control through EEG headsets, it remains crude and slow due to the complexity of brain signals 3. The future may hold more refined methods, potentially involving direct brain implants, though these come with significant risks 4.

    It's just a matter of technology as we get better and better at measuring what's going on inside the brain.

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    Eagleman suggests that advancements in this field could revolutionize how we interact with technology.

       

    Virtual Reality

    The discussion shifts to virtual reality (VR) and its profound impact on human perception. Eagleman highlights how VR can create immersive experiences that trick the brain into believing they are real, illustrating the brain's reliance on sensory input to define reality 5. He shares an example of a VR simulation where participants struggle to step off a virtual platform despite knowing they are safe.

    We are compelled by what our senses tell us. And if your eyes tell you that you're hovering 300 feet above a city, you just can't do it.

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    This phenomenon underscores the power of VR to alter our perception and the potential for its use in various applications.

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