The (neuro)science Of Getting And Staying Motivated

The (neuro)science Of Getting And Staying Motivated

The (neuro)science of getting and staying motivated

There is no question that motivation is one of the hardest and yet important factors in life. It’s the difference between success and failure, goal-setting and aimlessness, well-being and unhappiness. And yet, why is it so hard to get motivated – or even if we do, to keep it up?

That is the question that scientists led by Professor Carmen Sandi at EPFL and Dr Gedi Luksys at the University of Edinburgh have sought to answer. The researchers worked off previous knowledge that told them two things: First, that people differ a lot in their capacity to engage in motivated behavior and that motivational problems like apathy are common in neurodegenerative and psychiatric disorders. Second, to target an area of the brain called the “nucleus accumbens”.

Sitting close to the bottom of brain, the nucleus accumbens has been the subject of a lot of research. The reason is that it was quickly found to be a major player in functions like aversion, reward, reinforcement, and motivation.

To test and quantify motivation, the EPFL team designed what is known as a “monetary incentive force task”. The idea is that participants perform a task with increasing – and measurable – effort and get paid sums of money that correspond to their effort. Basically, do more and get paid more.

In this study, 43 men were scanned to measure–metabolites in the nucleus accumbens in their brains with a sophisticated brain-imaging technique called “proton magnetic resonance spectroscopy”, or 1H-MRS. This can specifically measure the abundance of neurochemicals in the brain, such as neurotransmitters and metabolites. Because of this 1H-MRS is used even in clinical settings to determine neurological disorders.

Subsequently, each participant was asked to squeeze a device that measures force – a dynamometer – to a given level of contraction in order to earn either 0.2, 0.5, or 1 Swiss franc. This procedure was repeated for a number of 120 consecutive trials, which made performance in the task quite demanding.

The idea of the experiment was that the different sums would push participants to decide if they were going to invest energy and perform the task accordingly at each trial. The scientists also ran the experiment under isolation and group conditions to investigate the influence of competition on performance.

Once they had gathered the behavioral data, the researchers processed it through a computational model that estimated the most appropriate parameters that should be measured with regard to utility, effort, and performance functions. This allowed them to interrogate whether particular neurotransmitter levels predicted specific motivational functions.

The analysis revealed that the key to performance – and, by extension, motivation – lies within the ratio of two neurotransmitters in the nucleus accumbens: glutamine and glutamate. Specifically, the ratio of glutamine to glutamate relates to our capacity for maintaining performance over a long period of time – what the researchers term “stamina”.

Another discovery was that competition seems to boost performance even from the beginning of the task. This was especially the case for individuals with low glutamine-to-glutamate ratios in the nucleus accumbens.

“The findings provide novel insights in the field of motivation neuroscience,” says Carmen Sandi. “They show that the balance between glutamine and glutamate can help predict specific, computational components of motivated performance. Our approach and data can also help us develop therapeutic strategies, including nutritional interventions, that address deficits in effort engagement by targeting metabolism.”

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4 years ago

#pretty sweet #snakes #gliding snakes #look at em go

Here’s how flying snakes stay aloft
High-speed cameras show that paradise tree snakes keep from tumbling as they glide through the sky by undulating their bodies.

The movie Snakes on a Plane had it wrong. That’s not how snakes fly.

Certain species of tree snakes can glide through the air, undulating their bodies as they soar from tree to tree. That wriggling isn’t an attempt to replicate how the reptiles slither across land or swim through water. The contortions are essential for stable gliding, mechanical engineer Isaac Yeaton and colleagues report June 29 in Nature Physics.

“They have evolved this ability to glide, and it’s pretty spectacular,” says Yeaton, of Johns Hopkins University Applied Physics Laboratory in Laurel, Md. Paradise tree snakes (Chrysopelea paradisi) fling themselves from branches, leaping distances of 10 meters or more (SN: 8/7/02). To record the snakes’ twists and turns, Yeaton, then at Virginia Tech in Blacksburg, and colleagues affixed reflective tape on the snakes’ backs and used high-speed cameras to capture the motion.

Physicists had previously discovered that the tree snakes flatten their bodies as they leap, generating lift (SN: 1/29/14). The new experiment reveals that the snakes also exert a complex combination of movements as they soar. Gliding snakes undulate their bodies both side to side and up and down, the researchers found, and move their tails above and below the level of their heads.

Scientists captured the undulating motion of paradise tree snakes as they glide through the sky. A computer simulation based on high-speed video shows that the undulation is necessary for stable flight.

Once the researchers had mapped out the snakes’ acrobatics, they created a computer simulation of gliding snakes. In the simulation, snakes that undulated flew similarly to the real-life snakes. But those that didn’t wriggle failed spectacularly, rotating to the side or falling head over tail, rather than maintaining a graceful, stable glide.

If confined to a single plane instead of wriggling in three dimensions, the snakes would tumble. So snakes on a plane won’t fly.

2 years ago

the skull is so big compare to her! Marvelous

@brittikitty on insta


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2 years ago

these all look phenominal!

Results From The #paleostream! Turnersuchus, Batrachognathus, Platyhystrix And Kundurosaurus. Some Details
Results From The #paleostream! Turnersuchus, Batrachognathus, Platyhystrix And Kundurosaurus. Some Details
Results From The #paleostream! Turnersuchus, Batrachognathus, Platyhystrix And Kundurosaurus. Some Details
Results From The #paleostream! Turnersuchus, Batrachognathus, Platyhystrix And Kundurosaurus. Some Details

Results from the #paleostream! Turnersuchus, Batrachognathus, Platyhystrix and Kundurosaurus. Some details might confuse you here. I explain below.

The Batrachognathus here are flying around a curious structure, a "Steinerne Rinne", a rare occurrence in which small, calciumhydrogencarbonat rich creeks over time turn into natural aqueducts because of moss and algae taking the Co2 out of the water. Limestone comes out and encrusts the moss.

Platyhystrix is not only shown with an osteoderm-only-sail but also producing spermatophores. Some modern day salamanders do this after a mating dance instead of the usual watery copulation.

The last scene shows a Kundurosaurus unsure about the situation it is in. It has it's nest next to a blue lava stream. Blue lava is created by high concentrations of burning sulfur on the surface.


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2 years ago

Hello! I don't know if you've answered this already but, How do I write banter between characters ?

Dialogue: Writing Banter

Stories need to strike a relative balance between exposition, action, and dialogue, and all of these things need to work together to:

-- develop characters, setting, and plot elements -- build relationships between characters -- fill in backstory or create foreshadowing -- establish stakes, conflict, tension, and goals -- deliver important information to character/reader -- set up, carry out, and resolve plot points

Since exposition, action, and dialogue are always working together to achieve the above, you have to be very careful about "filler" content. In other words, you don't want to have exposition, action, or dialogue that's not accomplishing at least one of the above items.

"Banter" refers to conversation (dialogue) that is playful, witty, and usually quick. In fiction, it's often used to illustrate personality, mood, and chemistry between characters. However, banter can get out of control quickly and turn into filler. The best way to avoid that is to think about the purpose of the dialogue scene. Which of those items listed above is this conversation meant to accomplish? Next, how does quick, playful, witty repartee between these characters help to accomplish that? Once you understand what you're trying to achieve and how the banter will help you do that, it's easier to see exactly what the banter should be.

The next thing to do is to look at what else is going on in the scene. What is the action of the scene trying to accomplish? Is there an important event occurring in this scene, or is it building up to one? Or maybe even following up after an important event? Thinking about where your characters were in the previous scene, what they're doing in this scene, and where they need to go in the next scene can give you some clues about the banter. For example, if they were at a party in the previous scene and the party was broken up by police, and now this new scene is at school the next day, it would make sense for the banter to be about that exciting event. Which character is most likely to make a playful or witty comment about what happened? Is this comment directed at the character they're speaking to? Is it directed at an off-screen character, such as the person who threw the party?

Maybe it's a witty comment directed toward a friend who missed the fun. Now you can look at who is most likely to respond back in an equally playful, witty way. At this point, if there's a third participant, it may be their turn to add something. Or, if it's just the two characters, the first person will take their turn. But at this point you also need to figure out what else you're trying to say with this banter. Maybe you want to illustrate that Character A is a little hurt that Character C didn't go to the party. So maybe after B has responded initially, then C said their bit, A says something that's playful but also illustrates their hurt that C didn't go with them. At which point, either B or C can hit back with something consolatory but still playful and witty.

A: Well, well, well. If it isn't Miss "I have more exciting things to do than go to some lame party." C: Yeah, yeah. I heard. Police-raided parties are so middle school.

B: Oh, so jaded, I love it! Really, it was exciting. You missed it!

A: If you loved me, you would have come.

C: If I loved you, I would have dumped you for expecting me to go to a lame party.

And that's that. Short and sweet. Doesn't need to drag on for half a page. The banter relates to something that happened in the previous scene, tells us something about the characters' personalities, and tells us something about their relationships.

As far as coming up with the actual wit when it's needed, that can be tricky for those of us who aren't particularly witty, or where our wit only comes out when warranted. In that case, I think it really helps to watch TV shows where there's a lot of witty characters and witty repartee. Any number of sitcoms from the past twenty-five years is great for this. You can also watch clips from such shows on YouTube.

I hope that helps!

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2 years ago

This is such a neat piece! I'd probably actually buy this to put it up in my place if I had the money.

Sketchy Thoughts By Jason Limon

Sketchy Thoughts by Jason Limon


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4 years ago
Hump-nosed Lizard (Lyriocephalus Scutatus)

Hump-nosed lizard (Lyriocephalus scutatus)

The hump-nosed lizard is a species of lizard within the agamid family, the only species in the genus Lyriocephalus. It is the largest agamid endemic to Sri Lanka and lives in dense wet zone forests. The hump-nosed lizard inhabits forests with high canopy and dense undergrowth, but it occasionally also enters home gardens. It is active during the day, when it dwells low on trees as well as on the ground. It goes higher up on trees to sleep at night. The typical threat posture is open-mouth gape, revealing the bright red lining of the oral cavity. This species is also known to feign death when picked up. Its diet comprises essentially of earthworms and also arthropods, including termites, butterflies, and moths. It is also known to feed on young shoots and buds.

photo credits: Kalyanvarma


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gatortavern - Archosaur's Abode
Archosaur's Abode

A Cozy Cabana for Crocodiles, Alligators and their ancestors. -fan of the webcomic Paranatural, Pokemon, Hideo Kojima titles -updates/posts infrequently

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