Showing 106 posts tagged brain

Researchers at Dartmouth and the University of North Carolina announced Tuesday that new evidence indicates that the retrosplenial cortex—a little-studied region near the center of the brain—is important in the formation of this kind of information, called episodic memories. Specifically, they believe the retrosplenial cortex may help make sense of the burst of new stimuli in a new environment: It may be the place where the body’s senses are integrated. When you walk into someone’s office, your brain records the location of the pieces of furniture, screens, bookshelves and windows inside, said David Bucci, a professor of psychological and brain sciences at Dartmouth and one of the authors of the paper. Your brain may not remember the arrangement of that office if nothing important happens inside—in fact, you’ll probably forget it—but if something memorable does happen, you will commit the setup of that room to your memory. That room will be forever linked to what you learned inside it.

In the Brain, Memories Are Inextricably Tied to Place - The Atlantic

The device will be able to “bridge the gaps that interfere with a person’s memory functions and effectively restore their abilities.” The chip would, effectively, become a neural prosthesis. Justin Sanchez, DARPA program manager, issued this statement, “The start of the Restoring Active Memory program marks an exciting opportunity to reveal many new aspects of human memory and learn about the brain in ways that were never before possible. Anyone who has witnessed the effects of memory loss in another person knows its toll and how few options are available to treat it. We’re going to apply the knowledge and understanding gained in RAM to develop new options for treatment through technology.”

Pentagon Well On Their Way to Building a Human Memory Chip - The Wire

By wiring, Dr. Seung means the connections from one brain cell to another, seen at the level of the electron microscope. For a human, that would be 85 billion brain cells, with up to 10,000 connections for each one. The amount of information in the three-dimensional representation of the whole connectome at that level of detail would equal a zettabyte, a term only recently invented when the amount of digital data accumulating in the world required new words. It equals about a trillion gigabytes, or as one calculation framed it, 75 billion 16-gigabyte iPads.

All Circuits Are Busy -

A rash of new literature grapples with the problem of memory in an age when technology has both overcome and highlighted the limits of the human brain’s recall.

Books of Forgetting: Why we can’t stop writing about what we can’t remember

(via thenewrepublic)

"Control over the sequence and duration of word processing is the most important variable that supports reading," they note. Research suggests that most readers don’t tend to saccade fluidly across a page; instead, between 10 and 15 percent of the time, our saccades take us in the wrong direction. Experimental work has suggested that these reversals, technically termed regressions, happen for a reason. Regressions, for example, are much more common in sentences that are prone to misinterpretations.

Speed reading apps may kill comprehension | Ars Technica

The more years of education people have, the more likely they will recover from a traumatic brain injury, according to the study published Wednesday in Neurology. In fact, one year after a traumatic brain injury, people with a college education were nearly four times as likely as those who hadn’t finished high school to return to work or school with no disability.

College-Educated Brains Recover Better From Injury, Study Suggests - NBC

Even worse news for those of us who are cognitively over-the-hill: the researchers find “no evidence that this decline can be attenuated by expertise.” Yes, we get wiser as we get older. But wisdom doesn’t substitute for speed. At best, older players can only hope to compensate “by employing simpler strategies and using the game’s interface more efficiently than younger players,” the authors say.

Your brain is over the hill by age 24

Humans now are trained to scan for the most important bits of information and move on, like how we read online. But that’s not how you’re supposed to read Moby Dick, or Middlemarch. Longer sentences require concentration and attention, not a break to check Twitter every 45 seconds. The Internet, and how it has changed our reading habits, is making it difficult for people, particularly young people, to read classic works of literature because our brains are trained to bob and weave from one piece of writing to the next. And 600 pages is just so many pages, you know? Pagination is like, the worst thing to happen to my life, and without a “Read All” option? Melville definitely needed a UX developer.

The Internet Is Probably Ruining Your Life, Marriage - The Wire

If society expects men to be witless dolts, always ready with a crude joke and ten beers in their stomachs, that’s only because they’re reacting to society’s expectations. In realizing these expectations, they simply exercise the part of their brains that will achieve what is required.

Men’s and women’s brains are the same, says scientist | Technically Incorrect - CNET News

The most accurate simulation of the human brain to date has been carried out in a Japanese supercomputer, with a single second’s worth of activity from just one per cent of the complex organ taking one of the world’s most powerful supercomputers 40 minutes to calculate. Researchers used the K computer in Japan, currently the fourth most powerful in the world, to simulate human brain activity. The computer has 705,024 processor cores and 1.4 million GB of RAM, but still took 40 minutes to crunch the data for just one second of brain activity.

Supercomputer models one second of human brain activity - Telegraph