Day 4188: Your Brain and Quilting.

   

"Broken": photo

 

  

 

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Click here:  Cynthia Erivo, At Last

 

 

2GN2S

What Your Brain Is Doing When You’re Not Doing Anything ...

Whenever you’re actively performing a task — say, lifting weights at the gym or taking a hard exam — the parts of your brain required to carry it out become “active” when neurons step up their electrical activity. But is your brain active even when you’re zoning out on the couch?

The answer, researchers have found, is yes. Over the past two decades they’ve defined what’s known as the default mode network, a collection of seemingly unrelated areas of the brain that activate when you’re not doing much at all. Its discovery has offered insights into how the brain functions outside of well-defined tasks and has also prompted research into the role of brain networks — not just brain regions — in managing our internal experience.

In the late 20th century, neuroscientists began using new techniques to take images of people’s brains as they performed tasks in scanning machines. As expected, activity in certain brain areas increased during tasks — and to the researchers’ surprise, activity in other brain areas declined simultaneously. The neuroscientists were intrigued that during a wide variety of tasks, the very same brain areas consistently dialed back their activity.

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It was as if these areas had been active when the person wasn’t doing anything, and then turned off when the mind had to concentrate on something external.

Researchers called these areas “task negative.” When they were first identified, Marcus Raichle, a neurologist at the Washington University School of Medicine in St. Louis, suspected that these task-negative areas play an important role in the resting mind. “This raised the question of ‘What’s baseline brain activity?’” Raichle recalled. In an experiment, he asked people in scanners to close their eyes and simply let their minds wander while he measured their brain activity.

He found that during rest, when we turn mentally inward, task-negative areas use more energy than the rest of the brain. In a 2001 paper, he dubbed this activity “a default mode of brain function.” Two years later, after generating higher-resolution data, a team from the Stanford University School of Medicine discovered that this task-negative activity defines a coherent network of interacting brain regions, which they called the default mode network.

In a brain network, the individual parts interact to bring about effects that they can only produce together.

More, here.

 

 

Recently, artist and friend, John Arbuckle, asked me "Hi Jacki. Did you ever do quilting? I think maybe not but not sure why I think that way. I answered "No, not me because of my patience deficiency but my Mom and her Mom, my Grandma were members of a quilting group called Willing Workers." 

When you think about it, collage is similar, but for the impatient ones, much less time intensive? And durable.

Mom was the youngest of ten. In the summer prior to her going off to college, she and Grandma made her clothes and outfits for her year ahead.

 

 

 

 

  

 

A 8 minute video, Kitbull, here.

 

 

  

Just because ...

  

Quetzal

 

 

Tuesday's Smiles ...