The regions of the brain that become active during mind wandering belong to two important networks. One is known as the executive control system. Located mainly in the front of the brain, these regions exert a top-down influence on our conscious and unconscious thought, directing the brain’s activity toward important goals. The other regions belong to another network called the default network. In 2001 a group led by neuroscientist Marcus Raichle at Washington University discovered that this network was more active when people were simply sitting idly in a brain scanner than when they were asked to perform a particular task. The default network also becomes active during certain kinds of self-referential thinking, such as reflecting on personal experiences or picturing yourself in the future.
The fact that both of these important brain networks become active together suggests that mind wandering is not useless mental static. Instead, Schooler proposes, mind wandering allows us to work through some important thinking. Our brains process information to reach goals, but some of those goals are immediate while others are distant. Somehow we have evolved a way to switch between handling the here and now and contemplating long-term objectives. It may be no coincidence that most of the thoughts that people have during mind wandering have to do with the future.
Well, that’s a relief – I can stop castigating myself for getting distracted by stuff while I’m… oooh, look, a new entry on TVtropes.com! [image by Spojeni]
Being a taxpayer-subsidized, too-big-to-fail institution, it’s possible that one of the few ways for Wells Fargo & Co. to know what it is doing is to notify itself with a court filing.
In this particular case, Wells Fargo holds the first and second mortgages on a condominium, according to Sarasota, Fla., attorney Dan McKillop, who represents the condo owner.
As holder of the first, Wells Fargo is suing all other lien holders, including the holder of the second, which is itself.
“The primary reason is to clear title and ownership interest in a property to prepare it for sale,” Waetke said in an email exchange. “So it really is not Wells Fargo vs. Wells Fargo.”
Yet court documents clearly label “Wells Fargo Bank NA” as the plaintiff and “Wells Fargo Bank NA” as a defendant.
If you tried to write that into a story, people would think you were doing satire. The truth really is stranger than fiction. [via SlashDot; image by TheTruthAbout]
They found a consistent rhythm as stories rose into prominence and then fell off over just a few days, with a “heartbeat” pattern of handoffs between blogs and mainstream media. In mainstream media, they found, a story rises to prominence slowly then dies quickly; in the blogosphere, stories rise in popularity very quickly but then stay around longer, as discussion goes back and forth. Eventually though, almost every story is pushed aside by something newer.
There is something truly wonderful about seeing this information laid out in such an intuitive manner. This kind of analysis of the growth, spread, and retention of ideas is certainly an area that will expand and grow over time.
I guess I never got far enough with my failed degree in electronics to discover that there’s a fundamental component missing from the metaphorical toolbox.
Four interconnected things, mathematics says, can be related in six ways. Charge and current, and magnetic flux and voltage, are connected through their definitions. That’s two. Three more associations correspond to the three traditional circuit elements. A resistor is any device that, when you pass current through it, creates a voltage. For a given voltage a capacitor will store a certain amount of charge. Pass a current through an inductor, and you create a magnetic flux. That makes five. Something missing?
Indeed. Where was the device that connected charge and magnetic flux? The short answer was there wasn’t one. But there should have been.
It’s a fairly lengthy article that covers a lot of ground, so it’s hard to summarize with a quote or two. Go read the whole thing; not only is the science itself quite intriguing, it’s also an example of the better sort of journalism that New Scientist puts out.
The little robot – with a diameter of just one millimeter – has neither engine nor onboard controls, instead being propelled forward by a magnetic field wielded on it from outside the patient’s body.
Controlling the tiny bot externally means boffins have been able to shrink it to a previously impossibly tiny scale […]
Scientists reckon the mini bot can even withstand massive blood flow and is able to push forward regardless of the magnetic field actuation direction, doing away with any need for exact localisation and direction retrieval.
A controller can move the little crawly creature in increments, with its speed of up to nine millimeters a second regulated by varying external magnetic field frequencies. Outside control also means the robot can be made to work for an unlimited amount of time, rather than suddenly – not to mention inconveniently – keeling over to die of battery failure in the middle of a medical procedure.
Promising… but still pretty freaky. You can thank regular reader and commenter Robert Koslover for grossing you out with this one. [image borrowed from linked article]
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