Internal Time: The Science of Chronotypes, Social Jet Lag, and Why You’re So Tired by Maria Popova Debunking the social stigma around late risers, or what Einstein has to do with teens’ risk for smoking. “Six hours’ sleep for a man, seven for a woman, and eight for a fool,” Napoleon famously prescribed. Mind Uploading: Brain Facts What's the scale of things here? The following lengths (from Posner p. 305) give approximate sizes for structures in the nervous system: 0.001 mm: synapses (tip of a connection between neurons) 0.1 mm: neurons (brain cell) 1 mm: local circuits (small networks of cells) 10 mm: maps (spatially organized topographic maps) 100 mm: systems (e.g., the visual system) 1000 mm: the central nervous system (including spinal cord) How many things are we talking about? As we sleep, speedy brain waves boost our ability to learn Scientists have long puzzled over the many hours we spend in light, dreamless slumber. But a new study from the University of California, Berkeley, suggests we're busy recharging our brain's learning capacity during this traditionally undervalued phase of sleep, which can take up half the night. UC Berkeley researchers have found compelling evidence that bursts of brain waves known as "sleep spindles" may be networking between key regions of the brain to clear a path to learning.
6 Insane Coincidences You Won't Believe Actually Happened America's Freak Luck During the Battle of Midway The Battle of Midway may be remembered as one of the most spectacular naval battles in history and one of the huge turning points in the Pacific theater, but it started out as a pure clusterfuck for the Americans. Despite going into battle with most of Japan's game plan in their pocket thanks to American codebreakers/Bothan spies, the U.S. Navy had little to show for it in the early hours of June 4, 1942. Just about every aircraft that took on the Japanese that day was destroyed, and all without delivering any serious damage.
7 Close Calls in the Nuclear Age Here's a formula for fun: Arm two superpowers to the teeth with thousands of nuclear warheads. Make sure they are deeply hostile and suspicious of each other. Now, cut off diplomatic communication, stir in about 50 smaller countries with their own agendas on each side, and you've got yourself a cold war! Spectral Signatures of Reorganised Brain Networks in Disorders of Consciousness Abstract Theoretical advances in the science of consciousness have proposed that it is concomitant with balanced cortical integration and differentiation, enabled by efficient networks of information transfer across multiple scales. Here, we apply graph theory to compare key signatures of such networks in high-density electroencephalographic data from 32 patients with chronic disorders of consciousness, against normative data from healthy controls. Based on connectivity within canonical frequency bands, we found that patient networks had reduced local and global efficiency, and fewer hubs in the alpha band. We devised a novel topographical metric, termed modular span, which showed that the alpha network modules in patients were also spatially circumscribed, lacking the structured long-distance interactions commonly observed in the healthy controls. Author Summary
Love Deactivates Brain Areas For Fear, Planning, Critical Social Assessment Love Deactivates Brain Areas For Fear, Planning, Critical Social Assessment Andreas Bartels and Semir Zeki of the Wellcome Department of Imaging Neuroscience, University College London have found using Functional Magnetic Resonance Imaging (fMRI) that love turns down activity in some areas of the brain in part so that we will not see flaws in the object of our affections. However the key result was that it's not just that certain shared areas of the brain are reliably activated in both romantic and maternal love, but also particular locations are deactivated and it's the deactivation which is perhaps most revealing about love. Among other areas, parts of the pre-frontal cortex – a bit of the brain towards the front and implicated in social judgment – seems to get switched off when we are in love and when we love our children, as do areas linked with the experience of negative emotions such as aggression and fear as well as planning.
How to Increase Dopamine Levels: Foods to Eat and What to Do Dopamine is the brain’s feel good chemical, sending feelings of well-being and pleasure into your body. In addition to simply making you feel good, dopamine helps control weight, energy levels, and supports brain and heart health. Without it, we would be more fat, unhappy, and tired. But if you know how to increase dopamine levels, you can take advantage of this feel good chemical on command.