Posts Tagged ‘brain’

Brain Science: Does Being Left-Handed Make You Angry?

But I know plenty of right-handed people who are not balanced.  Whatever. – Ilene 

Brain Science: Does Being Left-Handed Make You Angry?

By JOHN CLOUD, courtesy of TIME

TIME - brain picture

INGRAM PUBLISHING / GETTY IMAGES

We used to think that the left brain controlled your thinking and that the right brain controlled your heart. But neuroscientists have learned that it’s a lot more complicated.

In 2007, an influential paper in the journal Behavioral and Brain Functions found that while most of us process emotions through the right hemisphere of the brain, about 35% of people — especially victims of trauma — process their hurt and anger through their left brain, where logic and language sit. That may be because they had worked so hard to explain, logically, why they were suffering. But pushing emotions through the left brain taxed it: these people performed significantly worse on memory tests.

Now a new paper — out in the September issue of The Journal of Nervous and Mental Disease — further complicates the picture with a surprising finding: whether you are right-handed, left-handed or ambidextrous (which the authors call, rather delightfully, “inconsistently handed”) seems to be an important clue in understanding how you use your brain to process emotions.

It’s been known for some time that lefties and the ambidextrous are more prone to negative emotions. The new study shows that they also have a greater imbalance in activity between the left and right brains when they process emotions. Of course, you can’t be sure which comes first: maybe angry people are more out of balance, or maybe the inability to find equilibrium makes you angry. As for the left-handed: maybe they’re more angry because the world is designed for the right-handed majority.

The study also used an interesting method to find that angry people are, literally, hot-headed: the authors of the paper — led by Ruth Propper, a psychology professor at Merrimack College in Massachusetts — measured brain-hemisphere activation with a relatively old method called tympanic membrane temperature, which is essentially how hot it is in your inner ear. If you get angry a lot, your head tends to be warmer.

One problem is that the study was small — just 55 undergraduates participated (they were paid $20 each for having to endure ear-temperature tests and psychological questioning). Also, The Journal of Nervous and Mental Disease, while peer-reviewed, is one of less-respected psychology journals. Still, I like…
continue reading


Tags: , , , ,




Omega-3 lesson: Not so much brain boost as fishy research

This is a good article highlighting how scientific research gets misrepresented in the media, making it important to go to the original source.  Moreover, often an experiment measures one thing (a surrogate) but makes conclusions that go well beyond what was actually measured. (E.g. high cholesterol levels being used as a surrogate for heart attack risk.) – Ilene 

Omega-3 lesson: Not so much brain boost as fishy research

By Ben Goldacreguardian.co.uk

Fish oil helps schoolchildren to concentrate ran a headline in the Observer. Regular readers will remember the omega-3 fish oil pill issue. The entire British news media has been claiming for several years now that there are trials showing that the pill improves school performance and behaviour in mainstream children, despite the fact that no such trial has ever been published.

There is something very attractive about the idea that solutions to complex problems in education lie in a pill.

[...]

This paper showed no difference in performance at all. Since it was a brain imaging study, not a trial, the results of the children’s actual performance in the attention task was only reported in a single paragraph. But these results were clear: "There were no significant group differences in percentage correct, commission errors, discriminability, or reaction time."

So this is all looking pretty wrong. Are we even talking about the same academic paper? I’ve a long-standing campaign to get mainstream media to link to original academic papers when they write about them, at least online, with some limited success on the BBC website. I asked the writer Campbell which academic paper he was referring to, but he declined to answer, and passed me on the Stephen Pritchard, the readers’ editor for the Observer, who answered a couple of days later to say he did not understand why he was being involved. Eventually Campbell confirmed, but through Pritchard, that it was indeed a paper from the April edition of the American Journal of Clinical Nutrition.

[...]

Similarly, drug reps and researchers will often announce that their intervention has some kind of effect on some kind of elaborate measure of some kind of surrogate outcome: maybe a molecule in the blood goes up in concentration, or down, in a way that suggests the intervention might be effective.

This is all very well. But it’s not the same as showing that something really does actually work back here in


continue reading


Tags: , , , ,




How your brain remembers the future

Déjà vu, all over again.

How your brain remembers the future

Image Of Thinking Man's Brain Through Bowler Hat

By NewScientist

IT’S like remembering the future. Our brain generates predictions of likely visual inputs so it can focus on dealing with the unexpected.

Predictable sights trigger less brain activity than unfamiliar stimuli, bolstering the view that the brain is not merely reactive, but generates predictions based on the recent past. "The brain expects to see things and really just wants to confirm it now and again," says Lars Muckli at the University of Glasgow, UK.

[...]

The finding supports the "Bayesian brain" theory, which sees the brain as making predictions about the world which it updates when new information comes in.


Tags: , , , , ,




Driven toward reward without regard for consequence

This is interesting. However, the conclusion that "individuals with antisocial personality disorder may not be unaware of… consequences… but instead that their intense reward-seeking motivation consumes their attention wholly until they have fulfilled their desire for reward" seems overstated, and only a small piece of the psychopath puzzle.

For a different perspective, that of a financial writer, and an even farther-fetched conclusion, read the second article below. The same data can be interpreted to show that a trader taking on excessive risk is "hopped up on dopamine" so they can’t see negative consequences, making them "kind of a psychopath." Take all this with a grain of salt haloperidol. - Ilene 

Driven toward reward without regard for consequence

Courtesy of TIME, by Tiffany O’Callaghan

TIMEAn overactive dopamine reward system in the brain may help explain why psychopaths pursue rewards without regard for consequences, according to new research published this week in the journal Nature Neuroscience. Previous research has found that individuals who suffer from antisocial personality disorder—often referred to as sociopathology or psychopathology, despite debate over whether these are distinct conditions—lack empathy and fear. Yet this new study, from researchers at Vanderbilt University examines what these individuals may have in excess. According to the study, led by Joshua Buckholtz, a graduate student in psychology at Vanderbilt, individuals with antisocial personality disorder traits show signs of dysfunction in dopamine reward systems—suggesting that, in psychopaths, the drive toward reward can overwhelm all else.

Prior to participating in two different experiments, study subjects completed personality tests to identify presence and severity of psychopathic characteristic—including aggression, lack of empathy, and capacity for manipulation, among other things. Drawing on previous research that has established a strong link between substance abuse and psychopathology, in the first experiment researchers gave participants amphetamine, then used functional Magentic Resonance Imaging (fMRI) brain scans to monitor how dopamine release was affected by the stimulant. In a second experiment, study participants were told that they would be paid for performing a simple task, and researchers conducted brain scans while they completed the tasks.

In both experiments, researchers found that participants who had psychopathic characteristics according to the personality test, were more likely than those without those traits to have greater activity in the nucleus accumbens, the area of the brain associated with dopamine reward processing—whether in response to the chemical stimulant, or the suggestion of monetary reward.

The findings suggest that individuals


continue reading


Tags: , , , , , , , , ,




The Neuroeconomics Revolution

Fascinating article by Psy-Fi’s Tim.  (My yellow highlighting.) – Ilene

The Neuroeconomics Revolution

Courtesy of Tim at The Psy-Fi Blog

Blond Bride and a Half-dressed Punk Groom Getting Married in a Church

Marriage Made in Heaven – or Hell?

A recent development in economics sees the combining of neurology, psychology and economics in an attempt to reduce economic behaviour to brain function and to predict market behaviour from observable brain patterns. Its aim is to glue together a subject that can’t predict human behaviour from analysis of the brain with a subject that can’t predict human behaviour from analysis of people to a subject that can’t predict human behaviour from analysis of economic data.

Welcome to the Neuroeconomics Revolution.

The Busted Flushes of Psychology and Economics

Psychology spent a large part of the last century stuck in a behaviourist dead-end, carrying out endless experiments on animals in an attempt to explain all human behaviour in terms of externally observable responses to equally observable stimuli: think ringing bells causing salivating dogs or rising markets causing manic investors. The net result of this was that the subject ended up befuddled by mice running the wrong way around mazes and found itself generally regarded as the extreme paramilitary wing of the pigeon fanciers association.

Meanwhile economics, the study of how human financial systems operate, also proceeded on the basis that how humans actually behave was irrelevant and arrived at a set of explanations that defied both logic and the evidence of real markets. Yet even as economics has reluctantly faced up to the need to involve psychology in its models so psychology is beginning to recognise that understanding people requires a more detailed look at the way the brain actually works. Taken together we’re witnessing the creation of a new subject.

Neuroeconomics

Neuroeconomics is nothing more or less than the attempt to relate the now observable functioning of the brain, as provided by neuroscientific techniques, with the various models of economics. Advances in brain scanning techniques permit researchers to subject innocent participants to endless pointless questions while inspecting how their brains grapple with the problems. There is no escape.

As you might imagine, the marketeers of the world have leapt on this idea. Martin Lindstrom relates in Buyology how the inspection of people’s brains reveals what more…
continue reading


Tags: , , ,




Can Dopamine Make Your Future Look Brighter?

Our choices are dramatically influenced by the chemicals circulating through our bodies – so how much free choice do we really have? Is free will just an illusion?  - Ilene

Can Dopamine Make Your Future Look Brighter?

By John Cloud, courtesy of TIME

Tourism In Florida Falls Almost 10 Percent During Second Quarter

Humans have expended a great deal of intellectual energy over the past few thousand years trying to understand the morality (or amorality) of seeking pleasure. Most of philosophy begins with the question of what defines the (or a) good life. But what if the answer to what makes us happy comes down to how much of a particular chemical is circulating in our brain at any particular moment?

(As with risk taking, romantic love, religousness…. – Ilene)

The neurotransmitter dopamine isn’t quite that powerful, but evidence has been mounting for the past 40 years that its activity is key to helping the brain recognize experiences that cause pleasure. The more dopamine a certain event (having sex or eating ice cream, say) triggers, the more strongly that event gets hard-wired in the brain, and the more intensely your brain drives you to revisit it.

That knowledge also helps the brain figure out how much pleasure it can expect from future experiences and, therefore, influences virtually any decision you make about what you might like or not like: whether you should buy the red shirt or black one, whether you’ll enjoy watching Top Chef over Mad Men, whether you should leave your job or whether you should move in with your boyfriend.

Now a new paper in the journal Current Biology shows for the first time that by tinkering with levels of dopamine in the brain, researchers were be able to influence people’s future decisions in a reliable, predictable way. Led by Tali Sharot and Tamara Shiner of the the Wellcome Trust Center for Neuroimaging at University College London, scientists presented 61 healthy volunteers with 80 different vacation locations, such as Brazil, Thailand and Greece, and asked the volunteers to rate how happy they thought they would be visiting each place. Later, 29 of the participants were given 100 mg of levodopa (or L-DOPA), a drug that increases dopamine in the brain; the other 32 were unwittingly given a sugar pill. Forty minutes later, each participant was given a questionnaire about their emotional state, then a list…
continue reading


Tags: , , , , , , , ,




Disorderly genius: How chaos drives the brain

Here’s a fascinating New Scientist article on how your brain works, swinging back and forth between order and chaos, neurons firing away in a blizzard of random activity. – Ilene

Disorderly genius: How chaos drives the brain 

chaotic brain, geniusBy David Robson

HAVE you ever experienced that eerie feeling of a thought popping into your head as if from nowhere, with no clue as to why you had that particular idea at that particular time? You may think that such fleeting thoughts, however random they seem, must be the product of predictable and rational processes. After all, the brain cannot be random, can it? Surely it processes information using ordered, logical operations, like a powerful computer?

Actually, no. In reality, your brain operates on the edge of chaos. Though much of the time it runs in an orderly and stable way, every now and again it suddenly and unpredictably lurches into a blizzard of noise.

Neuroscientists have long suspected as much. Only recently, however, have they come up with proof that brains work this way. Now they are trying to work out why. Some believe that near-chaotic states may be crucial to memory, and could explain why some people are smarter than others.

In technical terms, systems on the edge of chaos are said to be in a state of "self-organised criticality". These systems are right on the boundary between stable, orderly behaviour – such as a swinging pendulum – and the unpredictable world of chaos, as exemplified by turbulence…

 Full article here.

 


Tags: , , , , ,




 
 
 

Zero Hedge

Futures Flat, Gold Rises On Weaker Dollar As Traders Focus On OPEC, Payrolls

Courtesy of ZeroHedge. View original post here.

Submitted by Tyler Durden.

After yesterday's US and UK market holidays which resulted in a session of unchanged global stocks, US futures are largely where they left off Friday, up fractionally, and just under 2,100. Bonds fell as the Federal Reserve moves closer to raising interest rates amid signs inflation is picking up. Oil headed for its longest run of monthly gains in five years, while stocks declined in Europe.

Treasuries retreated in the first full day of trading since Yellen said late Friday that the improving economy meant a rate increase would probably be in or...



more from Tyler

ValueWalk

COMEX Gold Futures Market - INFOGRAPHIC

By Jacob Wolinsky. Originally published at ValueWalk.

Infographic: COMEX Gold Futures Market

his COMEX Gold Futures Market infographic guides you through the largest gold futures market in the world, COMEX.

Did you for example know that only 1 in 2500 contracts on COMEX goes to physical delivery whereas the other 2499 contracts are cash-settled? This corresponds to a delivery percentage of 0.04% of all gold contracts.

The US government claims to hold a fair bit of gold in reserves but how much is it really holding?

In this infographic you will learn more about the COMEX gold futures market considering

  • COMEX Trading Volumes
  • Fractionally Reserved Futures Trading
  • Cash-settlement of COMEX Gold Futures Contracts
  • Eligible and Registered Gold on COMEX
  • US Treasury Gold Reserves
  • Locat...


more from ValueWalk

Phil's Favorites

Merkel Ready to Kiss and Make Up with Putin?

Courtesy of Mish.

German chancellor Angela Merkel wants to stand tough against Russia, but Austria, France, Italy, Hungary, Greece, and Portugal have had enough of sanctions that have backfired.

Talking tough may be Merkel’s official stance but circumstances have changed. She is no longer calling all the shots.

Step-by-Step Rapprochement

Please consider Step-by-Step Rapprochement: Germany Considers Easing of Russia Sanctions.

As expected, G-7 leaders reiterated their hardline approach to Moscow in the Japan summit’s closing statement. Chancellor Angela Merkel complained last Thursday that there still isn’t a stable ce...



more from Ilene

Market News

News You Can Use From Phil's Stock World

 

Financial Markets and Economy

Oil Set for Longest Run of Gains in 5 Years Before OPEC Meeting (Bloomberg)

Oil is set for the longest run of monthly gains in five years as output disruptions from Nigeria to Canada reduce supply before OPEC meets Thursday in Vienna to discuss production policy.

Every Stock Was a Buy to This Analyst Team, Then Shares Tanked (Bloomberg)

Companies probably love getting attention from analysts at Emperor Securities Ltd. in Hong Kong. Investors who followed their advice for the past year, not so much. ...



more from Paul

Chart School

Respectable Finish To Week

Courtesy of Declan.

Semiconductors were the star of the week.  The index cleared Match/April congestion and posted six consecutive winning days in a row. Technicals are all in the green and the index is above all key moving averages. Weakness will be a buying opportunity; a test of the 50-day MA would be a good start.


The Russell 2000 managed to regain the prior rising channel. Technicals are positive although it still has to make up relative ground against the Nasdaq. The index hasn't yet cracked new highs but one more days gain may be en...

more from Chart School

Kimble Charting Solutions

Gold Mining Stocks- Most dangerous time to own them in years?

Courtesy of Chris Kimble.

CLICK ON CHART TO ENLARGE

The rally in mining stocks since the first of the year has been very impressive.

The rally has taken Gold Miners ETF GDX up to test the 23% retracement of the collapse over the past 5-years. At the same time it is hitting the 23% level, two other resistance lines are being put to a test, with momentum at the highest levels in the past 5-years.

Joe Friday Just The Facts...



more from Kimble C.S.

Insider Scoop

Graham Media Group To Buy WCWJ, CW affiliate In Jacksonville, NBC Affiliate in Roanoke

Courtesy of Benzinga.

Graham Media Group, Inc., a Graham Holdings Company (NYSE: GHC) subsidiary, said it struck a deal with Nexstar Broadcasting Group, Inc. and Media General, Inc. to purchase WCWJ, a CW affiliate television station in Jacksonville, Florida and WSLS, an NBC affiliate television station in Roanoke, Virginia for $60 million in cash and the assumption of certain liabilities.

The agreement to acquire Nextar Broadcasting included pension obligations. Graham Media Group, Inc. would continue to operate both stations under their current network affiliations.

Graham Media said the acquisition is subject to approval by the FCC, other regulatory appr...



http://www.insidercow.com/ more from Insider

OpTrader

Swing trading portfolio - week of May 23rd, 2016

Reminder: OpTrader is available to chat with Members, comments are found below each post.

 

This post is for all our live virtual trade ideas and daily comments. Please click on "comments" below to follow our live discussion. All of our current  trades are listed in the spreadsheet below, with entry price (1/2 in and All in), and exit prices (1/3 out, 2/3 out, and All out).

We also indicate our stop, which is most of the time the "5 day moving average". All trades, unless indicated, are front-month ATM options. 

Please feel free to participate in the discussion and ask any questions you might have about this virtual portfolio, by clicking on the "comments" link right below.

To learn more about the swing trading virtual portfolio (strategy, performance, FAQ, etc.), please click here ...



more from OpTrader

Digital Currencies

The Biggest Bitcoin Arbitrage Ever?

Courtesy of Chris at CapitalistExploits

Do you remember when you were growing up and all your friends were allowed Atari game consoles but you weren’t?

Well, I do and the things seemed as foreign to me as Venus. Mostly because the little time I managed to spend on the gaming consoles when my friends weren’t hogging them I found it all a bit silly. I never “got” computer games, and to this day still have poor comprehension of things like Angry Birds.

I suspect that many people around the world view Bitcoin in the same way as I view Angry Birds: with mild amusement and a general lack of understanding as to what the hell all the fuss is about.

I was thinking of this since a buddy of mine recently started ...



more from Bitcoin

All About Trends

Mid-Day Update

Reminder: Harlan is available to chat with Members, comments are found below each post.

Click here for the full report.




To learn more, sign up for David's free newsletter and receive the free report from All About Trends - "How To Outperform 90% Of Wall Street With Just $500 A Week." Tell David PSW sent you. - Ilene...

more from David

Biotech

This Is Why Biotech Stocks May Explode Again

Reminder: Pharmboy and Ilene are available to chat with Members.

Here's an interesting article from Investor's Business Daily arguing that biotech stocks are beginning to recover from their recent declines, notwithstanding current weakness.

This Is Why Biotech Stocks May Explode Again

By 

Excerpt:

After a three-year bull run that more than quadrupled its value by its peak last July, IBD’s Medical-Biomed/Biotech Industry Group plunged 50% by early February, hurt by backlashes against high drug prices and mergers that seek to lower corporate taxes.

...



more from Biotech

Mapping The Market

About that debate last night

Although we try to stay focused on finding and managing promising trade ideas, the comments in the comment section sometimes take a political turn (for access, try PSW — click here!). So today, Jean Luc writes,

The GOP debate last night was just unreal – are these people running to be president of the US or to lead a college fraternity! Comparing tool size? The only guy that looks semi-sane is Kasich. The other guys are just like 3 jackals right now. 

And something else – if Trump is the candidate, that little Romney speech yesterday is probably already being made into a commercial. And all these little snippets from the debate will also make some nice ads! If you are a conservative, you have to be scared now. 

Phil writes back,

I was expecting them to start throwing poop at each other &n...



more from M.T.M.

Promotions

PSW is more than just stock talk!

 

We know you love coming here for our Stocks & Options education, strategy and trade ideas, and for Phil's daily commentary which you can't live without, but there's more!

PhilStockWorld.com features the most important and most interesting news items from around the web, all day, every day!

News: If you missed it, you can probably find it in our Market News section. We sift through piles of news so you don't have to.   

If you are looking for non-mainstream, provocatively-narrated news and opinion pieces which promise to make you think -- we feature Zero Hedge, ...



more from Promotions

Help One Of Our Own PSW Members

"Hello PSW Members –

This is a non-trading topic, but I wanted to post it during trading hours so as many eyes can see it as possible.  Feel free to contact me directly at jennifersurovy@yahoo.com with any questions.

Last fall there was some discussion on the PSW board regarding setting up a YouCaring donation page for a PSW member, Shadowfax. Since then, we have been looking into ways to help get him additional medical services and to pay down his medical debts.  After following those leads, we are ready to move ahead with the YouCaring site. (Link is posted below.)  Any help you can give will be greatly appreciated; not only to help aid in his medical bill debt, but to also show what a great community this group is.

http://www.youcaring.com/medical-fundraiser/help-get-shadowfax-out-from-the-darkness-of-medical-bills-/126743

Thank you for you time!




FeedTheBull - Top Stock market and Finance Sites



About Phil:

Philip R. Davis is a founder Phil's Stock World, a stock and options trading site that teaches the art of options trading to newcomers and devises advanced strategies for expert traders...

Learn more About Phil >>


As Seen On:




About Ilene:

Ilene is editor and affiliate program coordinator for PSW. She manages the site market shadows, archives, more. Contact Ilene to learn about our affiliate and content sharing programs.

Market Shadows >>