Archive for February, 2010
University Of Queensland Research Uncovers How Antidepressants Actually Work
A Sensory Fix for Problems in School (preview)
To succeed in school, children must master the “three R’s”--reading, writing and arithmetic--but not all students readily grasp these basic skills. Among English-speaking children, an estimated 2 to 15 percent have trouble reading or spelling, problems broadly classified as dyslexia. From 1 to 7 percent struggle to do math, a disability known as dyscalculia. Statistics vary; dyslexia appears to be more common, for example, among English speakers than among speakers of highly phonetic languages, such as German or Italian. Nevertheless, it is fair to say that at least one child in most elementary school classes in the U.S. suffers from dyslexia or dyscalculia.
These learning disabilities defy easy explanation. Neither is the result of faulty eyesight or hearing, both of which can also delay language acquisition but are easily corrected using glasses or hearing aids. Instead children with dyslexia and dyscalculia have working sensory organs, apparently normal sensory and motor development and, sometimes, above-average intelligence.
[More]
Mental Health, Naturally-first-of-its-kind, Comprehensive Guide To Nonprescription Therapies For Mental And Physical Well-being
“Hearts And Minds” Education Program Launched: On Average, People With Mental Illness Live 25 Years Less Than Other Americans
Happy, Enthusiastic People Less Likely To Develop Heart Disease
More Flexibility At Work Boosts Employee Health
The Brain’s Dark Energy (preview)
Imagine you are almost dozing in a lounge chair outside, with a magazine on your lap. Suddenly, a fly lands on your arm. You grab the magazine and swat at the insect. What was going on in your brain after the fly landed? And what was going on just before? Many neuroscientists have long assumed that much of the neural activity inside your head when at rest matches your subdued, somnolent mood. In this view, the activity in the resting brain represents nothing more than random noise, akin to the snowy pattern on the television screen when a station is not broadcasting. Then, when the fly alights on your forearm, the brain focuses on the conscious task of squashing the bug. But recent analysis produced by neuroimaging technologies has revealed something quite remarkable: a great deal of meaningful activity is occurring in the brain when a person is sitting back and doing nothing at all.
It turns out that when your mind is at rest--when you are daydreaming quietly in a chair, say, asleep in a bed or anesthetized for surgery--dispersed brain areas are chattering away to one another. And the energy consumed by this ever active messaging, known as the brain’s default mode, is about 20 times that used by the brain when it responds consciously to a pesky fly or another outside stimulus. Indeed, most things we do consciously, be it sitting down to eat dinner or making a speech, mark a departure from the baseline activity of the brain default mode.
[More]
Limits of Perception
“Every man takes the limits of his own field of vision for the limits of the world.” --Arthur Schopenhauer, Studies in Pessimism
[More]