Depressed people less likely to crave for pleasure

Washington, Aug 13 (ANI): People, who suffer from anhedonia, a key symptom of depression, are less likely to pursue rewards if there is any need to put an effort to obtain them, according to new study.

The research has indicated that decreased cravings for pleasure may be at the root of a core symptom of major depressive disorder.

The research, led by Vanderbilt psychologists Michael Treadway and David Zald, is contrary to the long-held notion that those suffering from depression lack the ability to enjoy rewards, rather than the desire to seek them.

“This initial study shows that decreased reward processing, which is a core symptom of depression, is specifically related to a reduced willingness to work for a reward,” said Treadway.

Decreased motivation to seek and experience pleasurable experiences, known as anhedonia, is a primary symptom of major depressive disorder. Anhedonia is less responsive to many antidepressants and often persists after other symptoms of depression subside.

But, researchers have always found it difficult to understand the different components of anhedonia- the desire to obtain something pleasurable versus experiencing pleasure-in humans.

“In the last decade and a half, animal models have found that the neurotransmitter dopamine, long known to be involved in reward processing, is involved in craving or motivation, but not necessarily enjoyment. To date, research into reward processing in individuals with anhedonia has focused on enjoyment of rewards, rather than assessing the drive to work for them. We think this task is one of the first to do that,” said Treadway.

For the study, the researchers devised the Effort-Expenditure for Rewards Task, or EEfRT, to explore the role of reduced desire and motivation in individuals reporting symptoms of anhedonia.

EEfRT involved having individuals play a simple video game that gave them a chance to choose between two different tasks, one hard, one difficult, to obtain monetary rewards.

Participants were eligible but not guaranteed to receive money each time they completed a task successfully.

The subjects were told at the beginning of each trial whether they had a high, medium or low probability of winning a prize if they successfully completed the trial.

The researchers found that subjects who reported symptoms consistent with anhedonia where less willing to make choices requiring greater effort in exchange for greater reward, particularly when the rewards were uncertain.

“Consistent with our hypotheses, we found that individuals with self-reported anhedonia made fewer hard-task choices. These findings are consistent with theoretical models linking anhedonia to decreased (dopamine levels),” wrote the authors.

Treadway said: “By addressing the motivational dimension of anhedonia, our findings suggest a plausible theoretical connection between dopamine deficiency and reward processing in depression, which may eventually help us better understand how anhedonia responds to treatment.”

The research was recently published by the online journal PLoS One. (ANI)

Loud music lovers will only heed experts’ advice to prevent going deaf: MTV Survey

Washington, July 14 (ANI): Loud music lovers would turn down the volume or use ear protection if told to do so by a health care expert, suggests a new Vanderbilt study carried out along with MTV.com shows.

Roland Eavey, director of the Vanderbilt Bill Wilkerson Center and chair of the Department of Otolaryngology, conducted the research in 2007 while working at Massachusetts Eye and Ear Infirmary at Harvard.

Eavey’s study, a follow-up to his groundbreaking 2002 MTV survey, discovered the media as the most informative source in guiding about risk of permanent hearing loss.

The “Intentional Exposure to Loud Music: The 2nd MTV.com Survey Reveals an Opportunity to Educate” also found that the health care community was the least likely source, despite respondents saying they would change behavior if an expert warned them to the problem.

Eavey said: “Since our last study we have learned that enough people still are not yet aware, but that more are becoming aware, especially through the help of the media.

“We have learned that the audience does use public health behaviors like sunscreen, designated drivers and seatbelts and that the health care community is the least likely source of informing patients about hearing loss, so we have an excellent opportunity to start educating patients.”

Eavey further alerted that “hearing loss from excessive sound volume is preventable … and once it happens, the loss is permanent and cannot be reversed. Even hearing aids might not help that type of hearing loss and the ringing of the ears that can occur.”

The study has been published in the Journal of Pediatrics. (ANI)

Ability to imagine oneself in someone else’s shoes ‘tied to empathy’

Washington, June 24 (ANI): The way our brain handles how we move through space-including being able to imagine literally stepping into someone else’s shoes-may be related to how and why we experience empathy toward others, say researchers.

The new study from Vanderbilt University has been published in the online scientific journal PLoS ONE.

Empathy, partly, involves the ability to simulate the internal states of others.

The authors hypothesized that humans’ ability to manipulate, rotate and simulate mental representations of the physical world, including their own bodies, would contribute significantly to their ability to empathize.

“Our language is full of spatial metaphors, particularly when we attempt to explain or understand how other people think or feel. We often talk about putting ourselves in others’ shoes, seeing something from someone else’s point of view, or figuratively looking over someone’s shoulder,” Sohee Park, report co-author and professor of psychology, said.

“Although future work is needed to elucidate the nature of the relationship between empathy, spatial abilities and their potentially overlapping neural underpinnings, this work provides initial evidence that empathy might be, in part, spatially represented,” the expert said.

“We use spatial manipulations of mental representations all the time as we move through the physical world. As a result, we have readily available cognitive resources to deploy in our attempts to understand what we see. This may extend to our understanding of others’ mental states,” Katharine N. Thakkar, a psychology graduate student at Vanderbilt and the report’s lead author, said.

“Separate lines of neuroimaging research have noted involvement of the same brain area, the parietal cortex, during tasks involving visuo-spatial processes and empathy,” she added.

To test their hypothesis that empathy and spatial processes are linked, the researchers designed an experiment in which subjects had to imagine themselves in the position of another person and make a judgment about where this other person’s arm was pointing. The task required the subject to mentally transform their body position to that of the other person.

“We expected that the efficiency with which people could imagine these transformations would be associated with empathy. Because we were interested in linking spatial ability with empathy, we also included a very simple task of spatial attention called the line bisection task.

This test involves looking at a horizontal line and marking the midpoint. Although this task is very simple, it appears to be a powerful way to assess subtle biases in spatial attention,” Thakkar said.

The researchers compared performance on the test with how empathetic the subjects reported themselves to be. They found that higher self-reported empathy was associated with paying more attention to the right side of space.

Boffins also found that in the female subjects only, the more empathetic people rated themselves, the longer they took to imagine themselves in the position of the person on the screen. (ANI)

Ability to imagine oneself in someone else’s shoes ‘tied to empathy’

Washington, June 24 (ANI): The way our brain handles how we move through space-including being able to imagine literally stepping into someone else’s shoes-may be related to how and why we experience empathy toward others, say researchers.

The new study from Vanderbilt University has been published in the online scientific journal PLoS ONE.

Empathy, partly, involves the ability to simulate the internal states of others.

The authors hypothesized that humans’ ability to manipulate, rotate and simulate mental representations of the physical world, including their own bodies, would contribute significantly to their ability to empathize.

“Our language is full of spatial metaphors, particularly when we attempt to explain or understand how other people think or feel. We often talk about putting ourselves in others’ shoes, seeing something from someone else’s point of view, or figuratively looking over someone’s shoulder,” Sohee Park, report co-author and professor of psychology, said.

“Although future work is needed to elucidate the nature of the relationship between empathy, spatial abilities and their potentially overlapping neural underpinnings, this work provides initial evidence that empathy might be, in part, spatially represented,” the expert said.

“We use spatial manipulations of mental representations all the time as we move through the physical world. As a result, we have readily available cognitive resources to deploy in our attempts to understand what we see. This may extend to our understanding of others’ mental states,” Katharine N. Thakkar, a psychology graduate student at Vanderbilt and the report’s lead author, said.

“Separate lines of neuroimaging research have noted involvement of the same brain area, the parietal cortex, during tasks involving visuo-spatial processes and empathy,” she added.

To test their hypothesis that empathy and spatial processes are linked, the researchers designed an experiment in which subjects had to imagine themselves in the position of another person and make a judgment about where this other person’s arm was pointing. The task required the subject to mentally transform their body position to that of the other person.

“We expected that the efficiency with which people could imagine these transformations would be associated with empathy. Because we were interested in linking spatial ability with empathy, we also included a very simple task of spatial attention called the line bisection task.

This test involves looking at a horizontal line and marking the midpoint. Although this task is very simple, it appears to be a powerful way to assess subtle biases in spatial attention,” Thakkar said.

The researchers compared performance on the test with how empathetic the subjects reported themselves to be. They found that higher self-reported empathy was associated with paying more attention to the right side of space.

Boffins also found that in the female subjects only, the more empathetic people rated themselves, the longer they took to imagine themselves in the position of the person on the screen. (ANI)

Tsunami hit New York City 2,300 years ago

London, May 4 (ANI): Scientists have come up with a scenario that suggests a huge tsunami crashed into the New York City region 2,300 years ago, dumping sediment and shells across Long Island and New Jersey and casting wood debris far up the Hudson River.

According to a report by BBC News, Steven Goodbred, an Earth scientist at Vanderbilt University, said that it may have been a large storm, but evidence is increasingly pointing to a rare Atlantic Ocean tsunami.

He said that large gravel, marine fossils and other unusual deposits found in sediment cores across the area date to 2,300 years ago.

The size and distribution of material would require a high velocity wave and strong currents to move it, and it is unlikely that short bursts produced in a storm would suffice, he explained.

“If we’re wrong, it was one heck of a storm,” said Goodbred.

According to Goodbred, the New York wave was on the Grand Banks scale – three to four metres high and big enough to leap over the barrier islands; but that it did not reach the magnitude of the 2004 Sumatran tsunami.

He first proposed the link between the layers of unusual debris found in sediment cores and a tsunami while studying shellfish populations in Great South Bay, Long Island.

He extracted many mud cores with incongruous 20cm layers of sand and gravel.

Their age matched that of wood deposits buried in the Hudson riverbed and marine fossils in a New Jersey debris flow in cores gathered by other researchers.

“The fist-sized gravel he found in Long Island would require a high velocity of water – well over a metre per second – to land where it did,” said Goodbred.

Among the fossils and shells sandwiched in the organic black mud of Sandy Hook Bay, New Jersey, Marine Geologist Cecilia McHugh of Queens College, City University of New York, discovered mud balls made from red clay that matched iron-rich sediments found onshore.

“The balls form their spherical shape only through vigorous reworking, and they do not form in small storms,” said Dr McHugh.

“I didn’t think much about it until we dated the deposit and came up with the same date that Steve did on Long Island,” she said.

According to Driscoll, to rule out the possibility of a severe storm, tsunami groups should collect more core samples to see whether the distribution of the debris is consistent. (ANI)

Drug improves health-related quality of life in nerve disease patients

Washington, Apr 25 (ANI): A new study has found that long-term treatment with Gamunex can significantly improve health-related quality of life in patients with chronic inflammatory demyelinating polyneuropathy (CIDP).

CIDP is a debilitating nerve disease that results in progressive weakness in the arms and legs, causing significant disability for many individuals.

Gamunex is the first and only FDA-approved product for the treatment of CIDP.

The researchers showed that patients who received Gamunex experienced greater improvements in physical and mental component scores compared with placebo.

“The data provide the rationale for administering maintenance doses of Gamunex every three weeks as a means of improving health-related quality of life and preventing relapse of symptoms,” said Dr Ingemar Merkie, Department of Neurology, Erasmus Medical Center, Rotterdam and Spaarne Hospital Hoofddorp, the Netherlands.

“Until now, there has been no FDA-approved dosing regimen for an effective course of intravenous immune globulin therapy to reduce neuromuscular disability and improve quality of life in patients with CIDP.

“Data from this trial provide an effective regimen with Gamunex to achieve improvements,” Merkie added.

“The improvement in health-related quality of life, social participation and activity supports the use of Gamunex in patients with CIDP who have responded to it in the past. It validates the benefits of every three week infusions of Gamunex,” said Dr. Peter Donofrio, professor of Neurology and Chief, Neuromuscular Section of the Department of Neurology, Vanderbilt University, Nashville, Tennessee.

The study appears in journal Neurology (ANI)

1-Unicredit says faces $360 mln claim in New Mexico

MILAN, April 11 (Reuters) – Unicredit (CRDI.MI), Italy’s second-biggest bank by market value, said it faced a claim for more than $360 million in the U.S. state of New Mexico over sale of collateralized debt obligations (CDOs) by its units there.

Frank Foy and his wife have filed on behalf of the state a claim related to the sale of CDOs by Unicredit’s Vanderbilt unit to the New Mexico Educational Retirement Board (ERB) and the State of Mexico Investment Council (SIC), Unicredit said in its 2008 report published on its website, www.unicreditgroup.eu.

Foy said he was the New Mexico ERB’s chief investment officer before retiring in March 2008.

CDOs are high-risk complex financial instruments issued with loans, bonds and other assets as collateral and their value plummeted in the wake of the U.S. subprime mortgage meltdown.

“Mr. Foy seeks, on behalf of the State, a total in excess of $360 million in damages, plus penalties, under the New Mexico Fraud Against Taxpayers Act on the grounds that Vanderbilt and the other defendants mentioned below falsely obtained $90 million in investment funds from ERB and SIC,” it said.

Unicredit, the Italian bank that has expanded most strongly abroad, saw net profit plunge 38 percent to 4.01 billion euros ($5.33 billion) in 2008 as a result of the financial crisis.

“We don’t have any information in this very preliminary phase which would allow us to quantify a potential loss in a reliable manner. However, for the time being, the claim has not been regularly served to any company belonging to our group,” Unicredit said.

Efforts by Reuters to contact a spokesperson for Chicago-based Vanderbilt Capital were unsuccessful.

Foy claimed the state lost $90 million of the initial investment and $30 million more in lost earnings, the bank said.

That meant total damages sought exceeded $360 million because alleged damages are automatically trebled under the New Mexico Fraud Against Taxpayers Act, Unicredit said.

($1=.7530 Euro) (Reporting by Svetlana Kovalyova, editing by Anthony Barker and Philip Barbara)

Pirates pose annoying distraction for Obama

Ragtag teams of modern-day Blackbeards are posing an annoying distraction for Barack Obama, forcing him to add Somalia to an already long list of foreign policy challenges.

American presidents are told to expect the unexpected, and Obama is seeing that this week. First it was a North Korean test of a ballistic missile last weekend. Now comes a swashbuckling high-seas standoff with armed renegades.

Obama so far has sent U.S. Navy ships to protect an American-flagged freighter that managed to repel a pirate attack but whose captain was taken hostage.

America’s recent experience with Somalia has not been good, making caution a key element of U.S. policy in dealing with the country.

The Obama administration was careful not to give the crisis too much prominence, with delicate negotiations under way to try to secure the captain’s release.

“We’re obviously paying careful attention to this issue. And I’m really not able to go beyond that at this point,” said State Department spokesman Robert Wood.

Obama, just back from a week-long trip to Europe and a morale-boosting visit to U.S. troops in Iraq, already has a long list of foreign challenges from North Korea to Iran to Afghanistan, and beyond.

He declined to comment on the pirate situation for the second day in a row on Thursday.

And the usually voluble Vice President Joe Biden said only: “This is being worked on around the clock since this happened. I’m not in a position right now (to comment).”

Somalia came to U.S. attention in 1992 when warring factions created a humanitarian crisis.

DISTRACTION

President George H.W. Bush, describing it as “God’s work,” sent U.S. combat troops to the east African nation in late 1992 there to lead an international U.N. force to secure the environment for relief operations.

“We will not stay one day longer than is absolutely necessary,” Bush said.

President Bill Clinton inherited the problem. He pulled most of the U.S. troops out in early 1993.

But those that remained were sent to track down warlord Mohamed Farah Aideed, ultimately leading to a 17-hour firefight in Mogadishu in which 18 American soldiers were killed, a disastrous battle that led to the book and movie, “Blackhawk Down.”

The pirate episode was a reminder to the United States that Somalia is a festering failed state — or as Foreign Policy magazine called it, “The Most Dangerous Place in the World” — and poses a foreign policy dilemma that will not go away.

“We don’t want to go back there,” said presidential historian Thomas Alan Schwartz, a professor at Vanderbilt University. “This may be one of those points where Obama is going to have to cash in some of his international chips and get the U.N. to go in there.”

“Somebody needs to go into Somalia and govern the place,” he said.

Democratic strategist Doug Schoen, who worked in the Clinton White House, called the crisis “a real test of national resolve” that the Obama White House and opposition Republicans need to work together to deal with.

“It’s an annoyance and a distraction,” he said. “On the other hand, if we don’t take this seriously and we don’t stamp it out we will face what other countries are facing, which are repeated acts of piracy.”

Drug to prevent exercise-induced arrhythmias identified

London, Mar 30 (ANI): Vanderbilt University Medical Center researchers have found that a drug can prevent potentially lethal arrhythmias caused due to exercise or stress, called CPVT.

Patients with CPVT experience abnormally rapid heart rates (tachycardia), usually during exercise or stress, and are at risk for fainting and cardiac arrest.

“It’s potentially a breakthrough in the treatment of this rare syndrome,” Nature quoted Bjorn Knollmann, M.D., Ph.D., associate professor of Medicine and Pharmacology, as saying.

For a long time, researchers have been studying the molecular defects that trigger arrhythmias and knew that the disorder is caused by mutations in two genes that encode calcium-handling proteins- the ryanodine receptor and calsequestrin.

In 2006, the group discovered these mutations allows calcium to “leak” out of its storage containers inside heart cells and cause arrhythmias at the cellular level.

The researchers developed a mouse model for CPVT (by eliminating the calsequestrin gene) and proposed using the model to study medications and interventions for the disorder.

When they tried flecainide, a clinically available anti-arrhythmic that is used to treat atrial fibrillation, it gave positive results.

In isolated heart cells, flecainide blocked the ryanodine receptor and the calcium “leak” (the underlying molecular defect in CPVT), and it completely prevented ventricular arrhythmias in the mouse model of CPVT.

“So we knew that this established drug specifically targets the disease mechanism in CPVT,” said Knollmann.

They then tested the drug in two patients, and found that, flecainide (combined with a beta blocker in the boy) prevented exercise-induced ventricular arrhythmias in both patients.

The patients have taken flecainide for more than six months now and are living normal lives.

The study was published in Nature Medicine. (ANI)

Distinguished economist Dr. Badal Mukhopadhyay joins TERI University

New Delhi, Mar 12 (ANI/Business Wire India): TERI University is honoured to have Dr. Badal Mukhopadhyay as the Professor of Economics.

He is a well- known academician, who has taught and headed prestigious institutions like Delhi School of Economics and IILM (Institute of Integrated Learning in Management).

He has been a Visiting Professor in several renowned foreign institutions like Vanderbilt University USA, Sydney University Australia, University of Witwatersrand South Africa and Johns Hopkins University USA.

He completed his doctoral degree under the guidance of eminent scholar Mr. Paul Samuelson from Massachusetts Institute of Technology.

He has extensively contributed in the field of economics and has written and reviewed several books and articles. His well known works are ‘Mathematical Models for Economic Analysis’, ‘Theory of the Firm in a Zero Interest Rate Economy’ and ‘Theory of Economic Growth: The Tradition of Ricardian Dynamics’ among others. (ANI)

Scientists move step closer to creating artificial life

London, Mar 12 (ANI): US researchers have claimed that artificial life could be created “within five years.”

Across the world laboratories are closing in on a “second genesis” – a breakthrough that would be one of the greatest scientific advancements of all time.

According to Prof David Deamer, from California University, although making a new lifeform from scratch is a tough task he’s confident it can happen in five to 10 years.

“The momentum is building – we’re knocking at the door,” The Telegraph quoted him, as saying.

A synthetic, made-to-order living system could produce everything from new drugs to biofuels and greenhouse gas absorbers.

The controversial research’s opponents claim the technology could lead to machines becoming “almost human”.

But there would be no safety issues for a long time as any initial organisms would be very primitive and need large-scale life support in the lab, reports New Scientist.

The breakthrough offers hope that they could create an entire cell.

According to Dr Anthony Forster, of Vanderbilt University, Tennessee, who is also creating a synthetic living cell in a test tube with Prof Church, “until you actually try this you won’t know”.

“Having said that we know cells can do it so we should be able to do it sooner or later,” he added. (ANI)

Gene variant associated with both autism and gastrointestinal dysfunction identified

Washington, March 3 (ANI): A specific gene variant that links increased genetic risk for autism with gastrointestinal (GI) conditions has been identified by scientists at the University of Southern California (USC) and Vanderbilt University.

Dr. Pat Levitt, director of the Zilkha Neurogenetic Institute at the Keck School of Medicine of USC and chair-designate of the Department of cell and neurobiology, says that the research team’s findings suggest that disrupted signalling of the MET gene may contribute to a syndrome that includes autism and co-occurring gastrointestinal dysfunction.

Autism is a developmental disorder characterized by deficits in communication abilities, social behaviour disruption and inflexible behaviour, according to background information in an article published in the journal Pediatrics.

Levitt and lead study author Dr. Daniel Campbell say that while gastrointestinal conditions are common among individuals with autism, researchers have long debated whether co-occurring GI dysfunction represents a unique autism subgroup.

“Gastrointestinal disorders don’t cause autism. Autism is a disorder of brain development. However, our study is the first to bring together genetic risk for autism and co-occurring GI disorders in a way that provides a biologically plausible explanation for why they are seen together so often,” Levitt says.

The researcher highlights the fact that the MET gene in the brain is expressed in developing circuits that are involved in social behaviour and communication, and that disturbances in its expression result in alterations in how these critical circuits develop and mature.

Levitt further says that research indicates that MET also plays an important role in development and repair of the GI system.

For their research, the team studied medical history records from 214 families in the Autism Genetic Resource Exchange (AGRE), and found that a variant in the MET gene was associated with autism specifically in those families where an individual had co-occurring autism and a GI condition.

According to Levitt, the study takes the research team a step further towards understanding the complex genetic risks for autism.

The researcher, however, concedes that further research is required, as different combinations of genes are likely to result in different types of autism features.

“We believe that there are other genes that will help identify different subgroups of individuals who have autism spectrum disorder.

We also believe that there needs to be research looking at whether the children with co-occurring GI dysfunction and autism have unique features that will help us predict what treatments will be best for them,” he says. (ANI)

Scientists invent world’s smallest periscopes

Washington, Feb 26 (ANI): A team of scientists at Vanderbilt University in the US has invented the world’s smallest version of the periscope and are using it to look at cells and other micro-organisms from several sides at once.

“With an off-the-shelf laboratory microscope you only see cells from one side, the top,” said team member Chris Janetopoulos, assistant professor of biological sciences.

“Not only can we see the tops of cells, we can view their sides as well – something biologists almost never see,” he added.

The researchers have dubbed their devices “mirrored pyramidal wells.”

As the name implies, they consist of pyramidal-shaped cavities molded into silicon whose interior surfaces are coated with a reflective layer of gold or platinum.

They are microscopic in dimension – about the width of a human hair – and can be made in a range of sizes to view different-sized objects.

When a cell is placed in such a well and viewed with a regular optical microscope, the researcher can see several sides simultaneously.

“This technology is exciting because these mirrored wells can be made at very low cost, unlike other, more complex methods for 3D microscopy,” said Assistant Professor of the Practice of Biomedical Engineering Kevin Seale.

According to Ron Reiserer, a lab manager at the Vanderbilt Institute for Integrative Biosystems Research and Education (VIIBRE), “This could easily become as ubiquitous as the microscope slide and could replace more expensive methods currently used to position individual cells.”

So far, the researchers have used the mirrored wells to examine how protozoa swim and cells divide.

“The method is particularly well suited for studying dynamic processes within cells because it can follow them in three dimensions,” said Janetopoulos.

Researchers in his lab have used the wells to track the 3D position of the centrosome – the specialized region of a cell next to the nucleus that is the assembly point where the microscopic polymer tubes that serve as part of the cell’s cytoskeleton are assembled before cell division and broken down afterwards.

The mirrored pyramidal wells provide a high resolution, multi-vantage-point form of microscopy that also makes it easier for researchers to measure a number of important cell properties.

In addition, John P. Wikswo, Gordon A. Cain University Professor and Director of VIIBRE, and, Dmitry A. Markov, research associate in biomedical engineering, plan to create mirrored microchannels to measure how cells are deformed under stress induced by fluid flowing through hair-width channels in order to determine how fluid flow affects cell behavior and attachment. (ANI)

Scientists discover “warm plasma cloak” enveloping Earth

Washington, Jan 8 (ANI): Scientists have assembled information that indicates the presence of a new magnetosphere layer around Earth, what they call a “warm plasma cloak.”

The magnetosphere, which is the shield of ions and electrons that envelops Earth, extends far beyond the atmosphere, defending the planet from the harmful solar wind.

Now, according to a report in National Geographic News, Charles Chappell, a physicist at Vanderbilt University in Nashville, Tennessee, led a research team that assembled information dating back decades to describe a new layer.

Some of the first hints of the cloak first showed up in data from research satellites in the early 1970s. The cloak was finally confirmed by NASA’s Polar satellite, which ended a 12-year run in April 2008.

The cloak’s discovery creates a theoretical home for particles that didn’t fit with any of the other understood parts of the Earth’s magnetosphere, according to Chappell.

The cloak’s tails billow in response to the direction of solar winds.

“The cloak particles didn’t fit with any of the other regions,” said Chappell.

Chappell and his colleagues called the layer the “warm plasma cloak” because it conjured an image for them of a person on a horse, wearing a long cloak.

Plasma is ionized gas found in space.

The warm plasma cloak begins thinly on the nightside—or darkside—of the planet and wraps around to the dayside, where it becomes thickest until noon.

In the afternoon, convective winds push the cloak out toward the edge of the magnetosphere, where it’s peeled off by solar winds.

Depending on where it is relative to Earth, and the energy of the solar wind, the cloak can be found anywhere from 13,000 to 65,000 miles (20,000 to 105,000 kilometers) above the Earth’s surface. It is always thickest on the planet’s dayside.

The formerly mysterious warm plasma cloak is also implicated in one of the menacing effects of the magnetic field—damage to dozens of human-made satellites over the years.

“The warm plasma cloak is part of the environment that communications and weather satellites fly in,” Chappell said. “It will play a role in how much the spacecraft charge electrically,” he added. (ANI)