Posts Tagged ‘Dopamine’

The Link Between Marijuana and Schizophrenia

Two components of marijuana have different effects on symptoms of psychosis. Delta-9 tetrahydocannabinol (THC) causes hallucinations and, in high enough doses, can cause temporary psychotic experiences, even in healthy people. Another chemical, cannabidiol (CBD), has anti-psychotic effects. Scientists hope to replicate the antipsychotic effects of CBD without triggering the risks of THC. – Ilene 

The Link Between Marijuana and Schizophrenia

TIME photos

[click on image for TIME's photo series "The Great American Pot Smoke-Out"]

By Maia Szalavitz, courtesy of TIME 

Since the days of Reefer Madness, scientists have sought to understand the complex connection between marijuana and psychosis. Cannabis can cause short-term psychotic experiences, such as hallucinations and paranoia, even in healthy people, but researchers have also long noted a link between marijuana use and the chronic psychotic disorder, schizophrenia.

Repeatedly, studies have found that people with schizophrenia are about twice as likely to smoke pot as those who are unaffected. Conversely, data suggest that those who smoke cannabis are twice as likely to develop schizophrenia as nonsmokers. One widely publicized 2007 review of the research even concluded that trying marijuana just once was associated with a 40% increase in risk of schizophrenia and other psychotic disorders. 

But here’s the conundrum: while marijuana went from being a secret shared by a small community of hepcats and beatniks in the 1940s and ’50s to a rite of passage for some 70% of youth by the turn of the century, rates of schizophrenia in the U.S. have remained flat, or possibly declined. For as long as it has been tracked, schizophrenia has been found to affect about 1% of the population. 

One explanation may be that the two factors are coincidental, not causal: perhaps people who have a genetic susceptibility to schizophrenia also happen to especially enjoy marijuana. Still, some studies suggest that smoking pot can actually trigger the disease earlier in individuals who are predisposed, and yet researchers still aren’t seeing increases in the overall schizophrenia rate or decreases in the average age of onset. 

In recent months, new research has explored some of these issues. One study led by Dr. Serge Sevy, an associate professor of psychiatry at the Albert Einstein College of Medicine in New York City, looked at 100 patients between the ages of 16 and 40 with schizophrenia, half of whom smoked marijuana. Sevy and colleagues found that among the marijuana users, 75% had…
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Michael Shermer on Self-Deception

Very interesting video. Michael Shermer discusses belief. Belief is the natural state of things, the default option of our minds. Science is not natural, it’s more difficult. It’s uncomfortable to not believe things. We have a "belief engine" in our brains. We find patterns and make connections. Like Pavlov’s dogs and Skinner’s rats.

Michael calls this pattern finding process "patternicity"--our tendency to find meaningful patterns in both meaningful and meaningless noise. L-Dopa (turns into dopamine) causes subjects to see more patterns, dopamine appears to be associated with patternicity. Neuroleptic drugs (dopamine antagonists) reduce psychotic behavior, reducing patternicities--delusions, paranoia, hallucinations--false or psychotic patterns. Watch the whole video… – Ilene 

Michael Shermer on Self-Deception

Courtesy of Miss Trade, Trading for the Masses

Fantastic Speech for Traders to watch especially Technical Traders. See what you want or what is real? What is real?

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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…
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Zero Hedge

The US Can't Afford To Let Shale Fail

Courtesy of ZeroHedge View original post here.

Authored by Robert Rapier via OilPrice.com,

It’s no secret that the growth of U.S. shale oil has been a thorn in the sides of both Saudi Arabia and Russia. They have seen their market shares erode as the shale boom made the U.S. the world’s largest producer of crude oil. But Saudi Arabia’s national oil company, Saudi Aramco, is a single entity that produces 13 percent of the world’s oil and controls 17 percent of the world’s proved reserves. That puts them in a very p...



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ValueWalk

Treasury Secretary Mnuchin on small business help plans

By Jacob Wolinsky. Originally published at ValueWalk.

CNBC transcript: Treasury Secretary Steven Mnuchin Speaks with CNBC’s “Squawk on the Street” today on small business help related to coronavirus

WHEN: Today, Wednesday, April 1, 2020

WHERE: CNBC’s “Squawk on the Street

Q4 2019 hedge fund letters, conferences and more

Full interview with Treasury Secretary Steven Mnuchin on small business help

JIM CRAMER: It’s our pleasure to bring in Steven Mnuchi...



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Kimble Charting Solutions

S&P Facing A Historical Kiss of Resistance?

Courtesy of Chris Kimble

Is the S&P starting out a new month and quarter at a very important price point? This chart would say YES!

This chart looks at the S&P 500 on a weekly basis over the past 12-years, reflecting that it has spent the majority of the past 9-years “inside of this rising channel and above its 200-week moving average!”

The weakness in March saw the S&P break below the bottom of the channel and its 200-week ma line for the first time in 9-years.

The small counter-trend rally last week has the S&...



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The Technical Traders

Weakness Appears To Be Setting For This Weeks Economic Data

Courtesy of Technical Traders

As the world reacts to the global economic slowdown because of the COVID-19 virus event and the massive stimulus programs and central bank efforts to support the global economy, investors still expect weakness in the US and foreign markets.  We believe this expected weakness will not subside until news of a proper resolution to this virus event is rooted in the minds of investors and global markets.

Hong Kong and China are currently concerned about experiencing a “third wave” of the COVID-19 virus within their society.  As the economies open back up to somewhat normal, people are very concerned that a renewed wave of new infections will suddenly appear and potenti...



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Phil's Favorites

Mr. Morgan

 

Mr. Morgan

Courtesy of 

The Federal Reserve had a precursor before it became the lender of last resort. It wasn’t an institution or a government department. It was a single, solitary man named J. Pierpont Morgan. Mr. Morgan, he was called in the newspapers, and you didn’t need to go any further – everyone knew to whom you were referring.

Stock market panics were common in the early 1900’s because of the agrarian nature of the economy. Each summer, the local banks that catered to farmers throughout the country began calling their money back from the banks in New York City and Chicago so they could raise enough capital to bring in the h...



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Insider Scoop

Why NanoVibronix's Stock Is Trading Higher Today

Courtesy of Benzinga

NanoVibronix (NASDAQ: NAOV) shares are trading higher on Wednesday.

The company announced it has received reimbursement approval from the U.S. Centers for Medicare & Medicaid Services for its PainShield.

NanoVibronix focuses on the manufacturing and sale of noninvasive biological response-activating devices that target biofilm prevention, wound healing, and pain therapy. Its principal products include UroShield, an ultrasound-based product to prevent bacterial colonization and biofilm in urinary catheters, enhance antibiotic efficacy,...



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Biotech/COVID-19

The new coronavirus emerged from the global wildlife trade - and may be devastating enough to end it

 

The new coronavirus emerged from the global wildlife trade – and may be devastating enough to end it

Government officers seize civets in a wildlife market in Guangzhou, China to prevent the spread of the SARS disease, Jan. 5, 2004. Dustin Shum/South China Morning Post via Getty Images

Courtesy of George Wittemyer, Colorado State University

COVID-19 is one of countless emerging infectious diseases that are zoonotic, meaning they originate in animals. ...



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Chart School

Big moving Averages and macro investment decisions

Courtesy of Read the Ticker

When price is falling every one wonders where demand will come in.


RTT black screen Tv videos study the simplest measure of price (simple moving average). What has happen before guides us now. 














Changes in the world is the source of all market moves, to catch and ride the change we believe a combination of Gann Angles, ...

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Members' Corner

10 ways to spot online misinformation

 

10 ways to spot online misinformation

When you share information online, do it responsibly. Sitthiphong/Getty Images

Courtesy of H. Colleen Sinclair, Mississippi State University

Propagandists are already working to sow disinformation and social discord in the run-up to the November elections.

Many of their efforts have focused on social media, where people’s limited attention spans push them to ...



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Digital Currencies

While coronavirus rages, bitcoin has made a leap towards the mainstream

 

While coronavirus rages, bitcoin has made a leap towards the mainstream

Get used to it. Anastasiia Bakai

Courtesy of Iwa Salami, University of East London

Anyone holding bitcoin would have watched the market with alarm in recent weeks. The virtual currency, whose price other cryptocurrencies like ethereum and litecoin largely follow, plummeted from more than US$10,000 (£8,206) in mid-February to briefly below US$4,000 on March 13. Despite recovering to the mid-US$6,000s at the time of writin...



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Lee's Free Thinking

Why Blaming the Repo Market is Like Blaming the Australian Bush Fires

 

Why Blaming the Repo Market is Like Blaming the Australian Bush Fires

Courtesy of  

The repo market problem isn’t the problem. It’s a sideshow, a diversion, and a joke. It’s a symptom of the problem.

Today, I got a note from Liquidity Trader subscriber David, a professional investor, and it got me to thinking. Here’s what David wrote:

Lee,

The ‘experts’ I hear from keep saying that once 300B more in reserves have ...



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Mapping The Market

How IPOs Are Priced

Via Jean Luc 

Funny but probably true:

...

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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...

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