Need for Constant Stimulation Triggered by Dopamine in the Brain Our need for stimulation and dopamine's action upon the brain are connected, which explains why people who constantly crave stimulation are in danger of addictive behaviour such as drug abuse and gambling. The urge to actively seek out new experiences is a personality trait that psychologists have known about for years, but up until now scientists have been unable to prove how this urge relates to hormonal activities in the brain. Now, an international research team made up of scientists from the University of Copenhagen, University of Aarhus and University of Tokyo have been able to prove for the first time that this hunger for stimulation is greater on average among people who possess more of the gratification hormone - dopamine in the brain.
Depressive realism Evidence for When participants were asked to press a button and rate the control they perceived they had over whether or not a light turned on, depressed individuals made more accurate ratings of control than non-depressed individuals. Among participants asked to complete a task and rate their performance without any feedback, depressed individuals made more accurate self-ratings than non-depressed individuals. For participants asked to complete a series of tasks, given feedback on their performance after each task, and who self-rated their overall performance after completing all the tasks, depressed individuals were again more likely to give an accurate self-rating than non-depressed individuals. When asked to evaluate their performance both immediately and some time after completing a task, depressed individuals made accurate appraisals both immediately after and after time had passed. Evidence against See also
Need To Know Please sign in using one of our supported services to begin saving your favorite programs and videos. We have updated our registration process. Please sign in using one of our supported services to bookmark your favorite programs and videos. 100 Websites You Should Know and Use Entertainment Meet David Peterson, who developed Dothraki for Game of Thrones There are seven different words in Dothraki for striking another person with a sword. Among them: “hliziﬁkh,” a wild but powerful strike; “hrakkarikh,”a quick and accurate strike; and “gezrikh,” a fake-out or decoy strike. But you won’t find these words in George R. R.
40 Superb Psychology Blogs Forty of the best psychology blogs, chosen to give you a broad sweep of the most interesting content being produced online right now. The list is split into three sections: first are more general psychological blogs, followed by those with an academic slant, followed by condition specific and patient perspective blogs. Other than that the blogs are presented in no particular order. Updated Sep 2012 to reflect blogs that are now inactive.
20 Super Brain Foods « Zen We know that the foods we eat affect the body but they can have even more influence on how well our brain functions. What we eat can have a POWERFUL affect on our brain’s energy, how the mind handles tasks, and our general mood. Our focus here is on those particular nutrients found in foods that enhance neuron firing and cross-linking in the brain. The foods listed below can help you: concentrate, increase memory, tune sensorimotor skills, keep you motivated, speed up your reaction time, control stress, and even slow down the aging of brain cells! So here is a list of 20 different food types that we can add to our diet, their effects, and how they function: Symptoms & Treatment What is Depression? Clinical depression goes by many names, such as “the blues,” biological depression, and major depression. But all of these names refer to the same thing: feeling sad and depressed for weeks or months on end — not just a passing blue mood of a day or two. This feeling is most often accompanied by a sense of hopelessness, a lack of energy (or feeling “weighed down”), and taking little or no pleasure in things that once gave a person joy in the past. Depression symptoms take many forms, and no two people’s experiences are exactly alike.
Ranking 37th — Measuring the Performance of the U.S. Health Care System Evidence that other countries perform better than the United States in ensuring the health of their populations is a sure prod to the reformist impulse. The World Health Report 2000, Health Systems: Improving Performance, ranked the U.S. health care system 37th in the world1 — a result that has been discussed frequently during the current debate on U.S. health care reform. The conceptual framework underlying the rankings2 proposed that health systems should be assessed by comparing the extent to which investments in public health and medical care were contributing to critical social objectives: improving health, reducing health disparities, protecting households from impoverishment due to medical expenses, and providing responsive services that respect the dignity of patients. Despite the limitations of the available data, those who compiled the report undertook the task of applying this framework to a quantitative assessment of the performance of 191 national health care systems.
Free Online MIT Course Materials Comparative Media Studies is the examination of media technologies and their cultural, social, aesthetic, political, ethical, legal, and economic implications. At MIT, students are trained to think critically about properties of all media and about the shared properties of different media, as well as the shared properties and functions of media more generally, both within one period of time and across generations. MIT Comparative Media Studies offers both undergraduate degree opportunities, as well as a two-year course of study leading to an SM degree. MIT Comparative Media Studies research and educational projects explore a wide variety of traditional media and their uses in education, entertainment, communication, politics, and commerce. Faculty are widely recognized for their leadership in developing both archival and instructional interactive projects, creating new models for thinking about, producing, and using digital media.
Which Is Bigger: A Human Brain Or The Universe? : Krulwich Wonders... This is one of those fun-to-think-about questions. A brain isn't much to look at, after all. It's about the size of your two fists put together, three pounds to hold, but oh my, what it can do. Robert Krulwich/NPR With our brains, we can think backwards, imagine forwards, conjure, create things that don't exist, leap vast distances. Scientists discover how the brain encodes memories at a cellular level (Santa Barbara, Calif.) –– Scientists at UC Santa Barbara have made a major discovery in how the brain encodes memories. The finding, published in the December 24 issue of the journal Neuron, could eventually lead to the development of new drugs to aid memory. The team of scientists is the first to uncover a central process in encoding memories that occurs at the level of the synapse, where neurons connect with each other. "When we learn new things, when we store memories, there are a number of things that have to happen," said senior author Kenneth S.
Beliefnet Voices - Therese J. Borchard - Beyond Blue “Bewitched, bothered, and bewildered am I” wrote US songwriter Lorenz Hart about the feeling of infatuation. It’s blissful and euphoric, as we all know. But it’s also addicting, messy and blinding. Without careful monitoring, its wild wind can rage through your life leaving you much like the lyrics of a country song: without a wife, job and truck. Algorithms Take Control of Wall Street Today Wall Street is ruled by thousands of little algorithms, and they've created a new market—volatile, unpredictable, and impossible for humans to comprehend.Photo: Mauricio Alejo Last spring, Dow Jones launched a new service called Lexicon, which sends real-time financial news to professional investors. This in itself is not surprising. The company behind The Wall Street Journal and Dow Jones Newswires made its name by publishing the kind of news that moves the stock market. But many of the professional investors subscribing to Lexicon aren’t human—they’re algorithms, the lines of code that govern an increasing amount of global trading activity—and they don’t read news the way humans do. They don’t need their information delivered in the form of a story or even in sentences.