Category: Reality
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Hallucinations…
Hallucinations are spooky and, fortunately, fairly rare. But, a new study suggests, the real question isn't so much why some people occasionally experience them. It's why all of us aren't hallucinating all the time. In the study, Stanford University School of Medicine neuroscientists stimulated nerve cells in the visual cortex of mice to induce an…
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Natural. Unnatural. How natural…
To find out which sights specific neurons in monkeys 'like' best, researchers designed an algorithm, called XDREAM, that generated images that made neurons fire more than any natural images the researchers tested. As the images evolved, they started to look like distorted versions of real-world stimuli. (1) Round and round we go. Trying to understand…
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Faster than light. In nothingness…
It has long been known that charged particles, such as electrons and protons, produce the electromagnetic equivalent of a sonic boom when their speeds exceed that of photons in the surrounding medium. This effect, known as Cherenkov emission, is responsible for the characteristic blue glow from water in a nuclear reactor, and is used to…
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Heat waves. Like… sound waves?
The next time you set a kettle to boil, consider this scenario: After turning the burner off, instead of staying hot and slowly warming the surrounding kitchen and stove, the kettle quickly cools to room temperature and its heat hurtles away in the form of a boiling-hot wave. We know heat doesn't behave this way…
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Yawning…
By studying the phenomenon of contagious yawning, the researchers learned that people's reactions in virtual reality (VR) can be quite different from what they are in actual reality. They found that contagious yawning happens in VR, but people's tendency to suppress yawns when they have company or feel they're being watched don't apply in the…
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