Navigation Links
Anticipation Could Have An Intense Effect On Memory

Anticipation of a fearful situation can play an important role in inspiring memory.

Researchers from the University of Wisconsin-Madison, while conducting a more in-depth research// on the formation of memory have come up with the findings that the very anticipation of a fearful situation can stir up two memory-forming regions of the brain even before the event has occurred.

The researchers explained that the simple act of anticipation might play a astonishingly important role in how fresh the memory of a tough experience could remain. Like for example, it has always been known by psychologists that memories of disturbing emotional events such as an act of violence or the unexpected death of a loved one are more clear and deeply imprinted in the brain than dull and routine recollections of everyday matters.

The findings of the brain-imaging study, which appear in the current issue of the Proceedings of the National Academy of Sciences, have important implications for the treatment of psychological conditions such as post-traumatic stress disorder (PTSD) and social anxiety, which are often characterized by flashbacks and intrusive memories of upsetting events.

"The main motivation for this study was a clinical one, in terms of understanding and applying knowledge about memory so that we can better inform the treatment of disorders that have a large memory component, like PTSD," says lead author Kristen Mackiewicz, a graduate student at the University of Colorado who worked on the anticipation study while a student at UW-Madison.

The project also builds on a relatively new body of work on the role of anticipation in emotion and clinical disorders, says senior author Jack Nitschke, a UW-Madison assistant professor of psychiatry and psychology.

"Our study illustrates how the power of expectancy can extend to memory formation as well," says Nitschke, also an associate of UW-Madison's Waisman Laborato ry for Brain Imaging and Behavior. "Just the expectation of seeing something bad can enhance the memory of it after it happens."

A teacher who struggles with stage fright, for example, might feel anxious before every class she has to teach. The UW-Madison work suggests that the longer she spends dreading her next lecture, the stronger her memory of the uncomfortable experience is likely to be when it is over. Unfortunately, that sets a vicious cycle in motion, because the stronger her memory of discomfort, the worse her performance anxiety is likely to get.

The UW-Madison scientists found that two key regions of the brain - the amygdala and the hippocampus - become activated when a person is anticipating a difficult situation. Scientists think the amygdala is associated with the formation of emotional memories, while the hippocampus helps the brain form long-term recollections, Nitschke says.

The researchers studied the brain activity of 36 healthy volunteers using a technique known as functional magnetic resonance imaging, which produces high-contrast images of human tissue. They began by showing the volunteers two kinds of signals. One was neutral, but the other indicated that some type of gruesome picture was soon to follow, such as explicit photos of bloody, mutilated bodies. Thirty minutes after the researchers had shown dozens of violent images, they quizzed study participants on how well they remembered the pictures they had just seen.

"We found that the more activated the amygdala and hippocampus had been during the anticipation [of the pictures], the more likely it was that a person would remember more of them right away," says Nitschke.

Two weeks after the experiment, scientists met with the study subjects again to measure how well they remembered the same disturbing images. This time, they found that people who best remembered them had shown the greatest amygdala and hippocampus activity during t he picture-viewing exercise two weeks before. That suggested that those subjects' brains had already started converting short-term memories of the images into longer-lasting ones.

Mackiewicz says the anticipation of an uncomfortable situation probably kick-starts a kind of "arousal or fear circuitry" in the brain, which in turn helps to reinforce old memories.

"In the future, we could look for ways to dampen that arousal response in patients so that they do not evoke negative memories so easily," she adds.

Source-Eurekalert
VIK
'"/>




Related medicine news :

1. Anticipation Of Pain Hurts Just As Bad As Experiencing It
2. Lean Protein Could Be Key to Obesity Drugs
3. Nasal Spray Could Take Drugs Direct to Brain.
4. Nasal Spray Could Take Drugs Directly to Brain
5. Oxygen Usage During Exercise Could Indicate Heart Problems
6. Ultrasound Screening Could Improve The Outcome Of Critically ill Patients
7. Anger Could Be Linked To Weight Gain
8. A Seizure Late In Life Could be A Stroke Warning
9. New Findings Could Reduce The Extent Of Spinal Cord Injuries
10. Could There Be A Link Between Famine and Breast Cancer ?
11. Bone Marrow Cells Could Yield A New Lease of Life
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/21/2017)... ... ... As recently as 2015, rhinoplasty was one of the Top 5 cosmetic ... patients want to make a change in the appearance of their nose while others ... team at usrhinoplasty.org is expanding its article database to better inform its ...
(Date:2/21/2017)... ... 2017 , ... American Veterinarian™, the premier multimedia provider of ... first bi-monthly issue of 2017 in February. The inaugural issue will offer expert ... , In making the announcement, American Veterinarian™ Publisher Chris Hennessy said, “We ...
(Date:2/21/2017)... San Francisco, California (PRWEB) , ... February 21, ... ... in the world with over 50,000 participants. The connected care demonstration spanned ... Office of the National Coordinator, roughly 30% of providers have no Health Information ...
(Date:2/21/2017)... ... February 21, 2017 , ... Along with Valentine’s Day, February marks ... small changes that can lead to a lifetime of heart health. In addition, ... emergency. , The Athletic Trainers’ Society of New Jersey (ATSNJ) is urging ...
(Date:2/20/2017)... ... 20, 2017 , ... Daily Body Restore, "DBR" a company ... “good” bacteria in the body, announced its Daily Body Restore® supplement is now ... Body Restore® is made with a unique combination of digestive enzymes and probiotics ...
Breaking Medicine News(10 mins):
(Date:2/21/2017)... 21, 2017 Mass Spectrometer Market: Overview ... This report on mass spectrometer ... prospects of the market globally. The stakeholders of ... the manufacture and commercialization of various mass spectrometer ... planning to enter this market. This report comprises ...
(Date:2/21/2017)... -- Luminex Corporation (NASDAQ: LMNX ) (the "Company") today ... of a quarterly cash dividend to its shareholders, the first ... payable on April 14, 2017 to shareholders of record as ... The board of directors intends for the Company ... holders of its common stock, representing a planned annual dividend ...
(Date:2/21/2017)... Feb. 21, 2017  Global health services company Cigna ... ® for breast reconstruction surgery and Dermacell ... an advanced acellular dermal matrix developed by LifeNet Health ... NVDQ ) "We are proud ... health-care payers to review the growing base of evidentiary ...
Breaking Medicine Technology: