8 Things Everybody Ought to Know About Concentrating “Music helps me concentrate,” Mike said to me glancing briefly over his shoulder. Mike was in his room writing a paper for his U.S. History class. On his desk next to his computer sat crunched Red Bulls, empty Gatorade bottles, some extra pocket change and scattered pieces of paper. In the pocket of his sweat pants rested a blaring iPod with a chord that dangled near the floor, almost touching against his Adidas sandals. On his computer sat even more stray objects than his surrounding environment. Mike made a shift about every thirty seconds between all of the above. Do you know a person like this? The Science Behind Concentration In the above account, Mike’s obviously stuck in a routine that many of us may have found ourselves in, yet in the moment we feel it’s almost an impossible routine to get out of. When we constantly multitask to get things done, we’re not multitasking, we’re rapidly shifting our attention. Phase 1: Blood Rush Alert Phase 2: Find and Execute Phase 3: Disengagement
Eloquence Eloquence (from Latin eloquentia) is fluent, forcible, elegant or persuasive speaking. It is primarily the power of expressing strong emotions in striking and appropriate language, thereby producing conviction or persuasion. The term is also used for writing in a fluent style. The concept of eloquence dates to the ancient Greeks, Calliope, (one of the nine daughters of Zeus and Mnemosyne) being the Muse of epic poetry and eloquence. Eloquence derives from the Latin roots: ē (a shortened form of the preposition ex), meaning "out (of)," and loqui, a deponent verb meaning "to speak." Petrarch (Fracesco Petrarca), in his study program of the classics and antiquity (Italian Renaissance) focused attention on language and communication. In modern times, colloquial speech entered into presentation styles deemed eloquent. §Eloquent politicians[edit] Politicians are often termed eloquent. §See also[edit] §Further reading[edit] §External links[edit]
9 Ways Facebook Is Changing People’s Lives Pan Xunbin / Shutterstock Facebook has over 800 million users, and researchers and pollsters have been busy studying them. Here are some of the ways the site is impacting people's lives and changing their behavior. 1. You Might Be Addicted If you're on Facebook, could you go 24 hours without checking your page? 2. When polled, a majority of people admit to snooping on their significant other through social media. 3. While many employers are blocking their workers’ access to social networking sites like Facebook and Twitter, studies have shown that people who use Facebook at work are actually up to 9% more productive than people who don't. 4. Most people use social networks to talk about the positives in their lives. Since you are only seeing the good part of a hundred or more people’s lives, you may end up feeling increasingly upset about the problems in your own life, which, at least according to their pages, none of your friends have. 5. ...or it Can Boost Your Self Esteem 6. 7. 8. 9.
Anandamide §History[edit] Anandamide was isolated and its structure first described in 1992 by W. A. Devane, Lumír Hanuš et al. who were working in a team led by Raphael Mechoulam at the Hebrew University of Jerusalem.[1] §Physiological functions[edit] Anandamide has been shown to impair working memory in rats.[7] Studies are under way to explore what role anandamide plays in human behavior, such as eating and sleep patterns, and pain relief. Anandamide is also important for implantation of the early stage embryo in its blastocyst form into the uterus. Anandamide plays a role in the regulation of feeding behavior, and the neural generation of motivation and pleasure. A study published in 1998 shows that anandamide inhibits human breast cancer cell proliferation.[12] Some studies have linked anandamide release as a mechanism of analgesic effects induced by exercise, particularly by running.[13] In 1996, researchers discovered anandamide in chocolate. §Synthesis and degradation[edit] §See also[edit]
Ocean's toxic alkalisation spurred animal evolution - life - 18 April 2012 HOW ironic. Concerns abound about the acidification of oceans due to climate change. Meanwhile, researchers have found evidence that the reverse - a massive and toxic alkalisation of the oceans hundreds of millions of years ago - paradoxically made animal life flower. Complex animals first appeared 850 million years ago but didn't evolve into a great variety of forms until the Cambrian period, 540 million years ago. Why the delay? Answering this is difficult, in part because rocks that formed immediately before the Cambrian appear to have vanished. Shanan Peters of the University of Wisconsin-Madison and Robert Gaines of Pomona College in Claremont, California, now suggest this crucial rock record may have dissolved into the ocean. The result was toxic. New Scientist Not just a website! More From New Scientist 410-million-year-old arachnid crawls back to life (New Scientist) Neanderthal demise traced in unprecedented detail (New Scientist) Human sex from the inside out (New Scientist)
Système de récompense Un article de Wikipédia, l'encyclopédie libre. Le système de récompense / renforcement est un système fonctionnel fondamental des mammifères, situé dans le cerveau, le long du faisceau médian du télencéphale. Ce système de « récompenses » est indispensable à la survie, car il fournit la motivation nécessaire à la réalisation d'actions ou de comportements adaptés, permettant de préserver l'individu et l'espèce (recherche de nourriture, reproduction, évitement des dangers…)[1]. Plus précisément, le système de renforcement est constitué par trois composantes : Certains psychotropes, comme l'alcool ou les opioïdes, agissent directement sur ce système quand ils sont ingérés, inhalés ou injectés dans l'organisme. Des expériences ont montré son existence chez le poisson rouge, le marsouin, le pigeon, le rat, le chat, le singe et l'être humain, ce qui suggère qu'il existe chez la plupart des vertébrés, tels les poissons, les oiseaux et les mammifères[7]. §Définitions[modifier | modifier le code]
Why you should learn to lucid dream | Yes, I Can! by Robin Nixon If you’ve never experienced it then you may find it hard to understand what lucid dreaming is all about. In fact you may be thoroughly sceptical and dismiss the whole thing as silly nonsense. But I can tell you from personal experience that lucid dreams are very real and something that many millions of people regularly enjoy. Note: Due to the huge amount of interest that this post has generated I am now seriously considering writing a book on the subject, and I would welcome input from anyone with an interest. These types of dreams are hyper-real in that when you experience one it is bursting with vibrant colour, there’s often marvellous music playing in the background (if you listen for it), the air is the freshest and sweetest you’ve ever smelled, and you are the healthiest you have ever been (or could ever be). Lucid dreaming is when you experience full consciousness while dreaming. When you ‘wake up’ inside a dream you can consciously appreciate just how wonderful dreams really are.
Cannabis and memory Much is still unknown or inconclusive regarding the precise effects of cannabis, and specifically cannabinoids, on memory.[1][2] However, some consistent data in human and animal models aid in the understanding of underlying mechanisms and behavioural effects of cannabis on memory.[1] A male cannabis plant that is growing in the wild. Cannabinoid receptors[edit] Cannabis' constituent cannabinoids, primarily delta-9-tetrahydrocannabinol (Δ9-THC or THC), are believed to impair different aspects of cognitive functioning, including memory.[3] An array of research into deciphering the modes of action for cannabis on the brain in memory has been conducted and collected. There are currently two well-known cannabinoid receptors in humans and animals: the CB1 and CB2 receptors.[4] The CB1 receptor is known for its mediating effects primarily on memory and cognitive functioning. CB1 receptor knockout mice[edit] Neurotransmitters[edit] Glutamate[edit] CB1 agonists (i.e. Dopamine[edit] Hippocampus[edit]
Who, What, Why: How dangerous are swans? 17 April 2012Last updated at 07:41 ET A man has drowned after being attacked by a swan, which knocked him out of his kayak and stopped him swimming to shore. So how dangerous are these graceful white birds? Anthony Hensley, 37, worked for a company that provided swans to keep geese away from property. On Saturday morning, the married father of two set out in a kayak across a pond at a residential complex in Des Plaines, just outside Chicago, where he was tending the birds. One of the swans charged his boat, capsizing it, says Cook County Sheriff Tom Dart, whose deputies investigated the death. Mr Hensley tried to swim to shore but eyewitnesses told the sheriff's investigators the swan appeared to have actively blocked him. "I find myself still scratching my head," says Sheriff Dart. Continue reading the main story The answer According to ornithologists, the swan's aggressive reaction is typical for the species, the mute swan, when defending a nest. "It's going to defend that territory."
Long-term effects of cannabis §Memory and intelligence[edit] Long term exposure to cannabis poses a risk of irreversible cognitive impairment in children and pre-pubescent adolescents; other than for the very highest of doses, no similar risk has been established for adults.[2] Negative changes in attention, psychomotor task ability, and short-term memory are associated with very recent (12 to 24 hours) marijuana use. Any long-term central nervous system effects of the residual drug are indistinguishable from variations in the user's susceptibility, or any pre-existing psychiatric disorder.[3] §Dependency[edit] Research has shown the overall addiction potential for cannabis to be less than for cocaine or heroin, but slightly higher than that for psilocybin, mescaline, or LSD.[6] §Mental health[edit] Although cannabis alone is not believed to cause psychosis, it may be a contributory factor, particularly when combined with an existing susceptibility. §Acute psychosis[edit] §Anxiety[edit] §Chronic psychosis[edit] §Lung[edit]