Power Up Your Brain: Myth vs. Reality

What's the Big Idea?


Forget coffee and crosswords. If you want to supercharge your brain, you have to change your lifestyle. But only a few things about it. Here, we lay to rest some of the well-worn myths of power thinking, and give you the facts on what you can do to actually improve mental performance.

What's the Significance?

This weekend, we've been examining power and balance in relationships, work, and life. Today we're looking specifically at how power thinking can help us live fuller lives. Princeton neuroscientist Sam Wang shares his strategies for problem-solving, making good decisions, and finding happiness: 

In an intellectual rut? Hang out in a public space and get inspired. 

Divergent thinking is the practice of solving problems in unexpected ways, a fundamental first step to discovery. Even crows do it, says Wang: “What ethologists have discovered is that when you take a crow, most crows learn how to open the box like this and flip it like that. But occasionally, a crow will have the innovative thought of pulling the box the other way.” The quirky crows are soon copied by other crows, who learn the innovative way of solving the problem right away. Human beings are especially skillful at this kind of social learning.

Collaboration helps us adopt smarter, more creative solutions in less time than it would if we attacked every problem in isolation. That’s why Wang believes that one of the best ways to confront a tough task is to cross paths with colleagues. He makes a point of leaving his office to eat lunch in an atrium in his building every day. “It’s a real live version of Facebook or Google,” he says. “As much as people like to talk about social networking sites, personal networking between live people, face-to-face, I still far more effective than any online kind of interaction.”

Turn to others for guidance.

Human brains house a tremendously complex prefrontal cortex, which gives us the capability to think about a modeled world and contemplate the future. Where we get caught up is our ability to predict the long-term effects of our decisions. “It’s difficult to judge whether some life decision you make today will make you happy a few years down the road,” says Wang. To  get around this limitation, he recommends  learning from someone who has been faced with the same decision: “They can report accurately whether it made them happy or unhappy.” 

Adapt.

In evolutionary terms, human beings have long been adept at making tools and shaping our environment through habits of the mind. But there are some problems we simply can't think our way out of. The stress of falling chronically ill, facing a traumatic injury, or losing a job is very real, and it's trite to suggest that we can snap out of it.

Take heart in the fact that people are extraordinarily resilient. "You might imagine that something like losing a limb would really affect one’s happiness," says Wang. In fact, studies show that after the initial shock, people recover quite quickly. "After a few years... it's almost as if you had not lost the limb in terms of your happiness." This amazing adaptability is perhaps the greatest of the brain's many powers. 

"One thing that seems to be a hallmark of our species is how good we are at that," he adds. "If you compare [us] with any other species, we seem to be very, very good." Our only close competitors? Cockroaches.

Images courtesy of Shutterstock/agsandrewDiego CervoYellowjmikeledray & 

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Scientists study tattooed corpses, find pigment in lymph nodes

It turns out, that tattoo ink can travel throughout your body and settle in lymph nodes.

17th August 1973: An American tattoo artist working on a client's shoulder. (Photo by F. Roy Kemp/BIPs/Getty Images)
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In the slightly macabre experiment to find out where tattoo ink travels to in the body, French and German researchers recently used synchrotron X-ray fluorescence in four "inked" human cadavers — as well as one without. The results of their 2017 study? Some of the tattoo ink apparently settled in lymph nodes.


Image from the study.

As the authors explain in the study — they hail from Ludwig Maximilian University of Munich, the European Synchrotron Radiation Facility, and the German Federal Institute for Risk Assessment — it would have been unethical to test this on live animals since those creatures would not be able to give permission to be tattooed.

Because of the prevalence of tattoos these days, the researchers wanted to find out if the ink could be harmful in some way.

"The increasing prevalence of tattoos provoked safety concerns with respect to particle distribution and effects inside the human body," they write.

It works like this: Since lymph nodes filter lymph, which is the fluid that carries white blood cells throughout the body in an effort to fight infections that are encountered, that is where some of the ink particles collect.

Image by authors of the study.

Titanium dioxide appears to be the thing that travels. It's a white tattoo ink pigment that's mixed with other colors all the time to control shades.

The study's authors will keep working on this in the meantime.

“In future experiments we will also look into the pigment and heavy metal burden of other, more distant internal organs and tissues in order to track any possible bio-distribution of tattoo ink ingredients throughout the body. The outcome of these investigations not only will be helpful in the assessment of the health risks associated with tattooing but also in the judgment of other exposures such as, e.g., the entrance of TiO2 nanoparticles present in cosmetics at the site of damaged skin."

Photo by Alina Grubnyak on Unsplash
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