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Taking a nap sharpens your brain, suggests new science
A new study finds that naps bring cognitive benefits.
- Researchers find that daytime naps help your brain deal with unconscious information.
- A short sleep can improve brain processing speed.
- Scientists looked at how subjects performed on tasks they were not consciously aware of.
Maybe you knew this already, but daytime naps are good for you. But why exactly? A new study that measured changes in people's brains before and after naps found that there are clear cognitive benefits to sleeping on it. A nap can help with how we process and react to information.
Researchers from the University of Bristol in the U.K discovered that even a short period of sleep allows our brains to interpret unconscious information that is not part of our usual awareness.
For the study, the scientists recruited sixteen participants of varying ages. Since prior research established that sleep helps problem solving, the researchers probed whether a conscious mental process is necessary before or during sleep to help with that.
In the experiments, the participants were shown information very briefly, effectively "masking" it to avoid conscious perception. But this information, which consisted of specially-chosen words, was processed subliminally in the brain, allowing the scientists to zero in on whether this hidden knowledge interferes with consciously perceived info.
The participants carried out their main task – the masked prime task – and a control task, where they had to react if they spotted red or blue squares on a screen. After their tasks, the subjects were made to either take a 90-minute nap or stay awake before performing the same tasks again.
Scientists studied how the brains of the participants reacted using an EEG and saw that sleep improved the processing speed of the masked prime task. The same effect was not observed for the control task. This indicated that sleep was responsible for inducing improvement in tasks that were processed unconsciously.
The researchers conclude that even a bit of sleep can go a long way in helping us deal deeper with information that comes at us during waking hours.
The study was carried out by Netasha Shaikh and Elizabeth Coulthard from the University of Bristol.
Dr. Coulthard, who is the Consultant Senior Lecturer in Dementia Neurology at the University of Bristol Medical School, remarked that their "findings are remarkable in that they can occur in the absence of initial intentional, conscious awareness, by processing of implicitly presented cues beneath participants' conscious awareness."Check out the new study published in the Journal of Sleep Research.
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Construction of the $500 billion dollar tech city-state of the future is moving ahead.
- The futuristic megacity Neom is being built in Saudi Arabia.
- The city will be fully automated, leading in health, education and quality of life.
- It will feature an artificial moon, cloud seeding, robotic gladiators and flying taxis.
The Red Sea area where Neom will be built:
Saudi Arabia Plans Futuristic City, "Neom" (Full Promotional Video)<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="c646d528d230c1bf66c75422bc4ccf6f"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/N53DzL3_BHA?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
Frequent shopping for single items adds to our carbon footprint.
- A new study shows e-commerce sites like Amazon leave larger greenhouse gas footprints than retail stores.
- Ordering online from retail stores has an even smaller footprint than going to the store yourself.
- Greening efforts by major e-commerce sites won't curb wasteful consumer habits. Consolidating online orders can make a difference.
A pile of recycled cardboard sits on the ground at Recology's Recycle Central on January 4, 2018 in San Francisco, California.
Photo by Justin Sullivan/Getty Images<p>A large part of the reason is speed. In a competitive market, pure players use the equation, <em>speed + convenience</em>, to drive adoption. This is especially relevant to the "last mile" GHG footprint: the distance between the distribution center and the consumer.</p><p>Interestingly, the smallest GHG footprint occurs when you order directly from a physical store—even smaller than going there yourself. Pure players, such as Amazon, are the greatest offenders. Variables like geographic location matter; the team looked at shopping in the UK, the US, China, and the Netherlands. </p><p>Sadegh Shahmohammadi, a PhD student at the Netherlands' Radboud University and corresponding author of the paper, <a href="https://www.cnn.com/2020/02/26/tech/greenhouse-gas-emissions-retail/index.html" target="_blank">says</a> the above "pattern holds true in countries where people mostly drive. It really depends on the country and consumer behavior there."</p><p>The researchers write that this year-and-a-half long study pushes back on previous research that claims online shopping to be better in terms of GHG footprints.</p><p style="margin-left: 20px;">"They have, however, compared the GHG emissions per shopping event and did not consider the link between the retail channels and the basket size, which leads to a different conclusion than that of the current study."</p><p>Online retail is where convenience trumps environment: people tend to order one item at a time when shopping on pure player sites, whereas they stock up on multiple items when visiting a store. Consumers will sometimes order a number of separate items over the course of a week rather than making one trip to purchase everything they need. </p><p>While greening efforts by online retailers are important, until a shift in consumer attitude changes, the current carbon footprint will be a hard obstacle to overcome. Amazon is trying to have it both ways—carbon-free and convenience addicted—and the math isn't adding up. If you need to order things, do it online, but try to consolidate your purchases as much as possible.</p><p>--</p><p><em>Stay in touch with Derek on <a href="http://www.twitter.com/derekberes" target="_blank">Twitter</a>, <a href="https://www.facebook.com/DerekBeresdotcom" target="_blank">Facebook</a> and <a href="https://derekberes.substack.com/" target="_blank">Substack</a>. His next book is</em> "<em>Hero's Dose: The Case For Psychedelics in Ritual and Therapy."</em></p>
Chronic irregular sleep in children was associated with psychotic experiences in adolescence, according to a recent study out of the University of Birmingham's School of Psychology.