Tuesday, December 17, 2013
Words to keep inside your pocket
- Quiescent - a quiet, soft-spoken soul.
- Chimerical - merely imaginary; fanciful.
- Susurrus - a whispering or rustling sound.
- Raconteur - one who excels in story-telling.
- Clinquant - glittering; tinsel-like.
- Aubade - a song greeting the dawn.
- Ephemeral - lasting a very short time.
- Sempiternal - everlasting; eternal.
- Euphonious - pleasing; sweet in sound.
- Billet-doux - a love letter.
- Redamancy - act of loving in return.
Monday, December 16, 2013
Exercise
Exercise triggers the creation of highly excitable neurons in the hippocampus, the region of the brain associated with memory, learning, and emotional responses. This speeds up overall brain function, but because of the new neurons’ excitability, it should also make the brain more susceptible to anxiety. Yet it doesn’t.
To find out why, the Princeton team split lab mice into two groups. One group had access to a running wheel (with the mice averaging an impressive 2.5 miles per night), and the other did not. After six weeks, the researchers intentionally freaked out all the mice by dunking them in cold water, then looked at their brains with an fMRI machine. Almost immediately, they noticed that the two groups reacted differently. The brain cells of the inactive mice became agitated and leaped into a frenzy, while those of the active mice did not. The reason: the active mice were able to produce and release more of the neurotransmitter GABA, which helps sedate jumpy neurons.
The discovery … marked a breakthrough in understanding how exercise helps the brain regulate anxiety. In essence, exercise creates new, faster neurons, but it also reinforces the physiological mechanism that prevents those uppity brain cells from firing during times of stress.
Saturday, December 14, 2013
Wednesday, December 11, 2013
blame the poor for buying stuff they can’t afford
The top 100 advertisers spent more than $100 billion last year trying to convince us we need newer cell phones, faster cars, better makeup, and more credit card debt. They inundate us with billboards, banner ads, and TV spots telling us we’re not good enough unless we buy their stuff. Do we really think this relentless barrage of advertising has no impact on our behavior, our sense of worth, our understanding of what we really need?
http://benirwin.wordpress.com/2013/12/10/why-do-we-blame-the-poor/
http://benirwin.wordpress.com/2013/12/10/why-do-we-blame-the-poor/
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