Navigation Links
Research Reveals Anatomy of Suppressed Memories: Study

US researchers have identified the parts of the brain that are involved with suppressing unpleasant memories, a finding that could have implications for treating depression or post traumatic stress disorder, according to a study released Thursday.

The concept of memory suppression has been a controversial one among psychologists for a century, but in this study neuroscientists used brain scans to show that volunteers who have been asked to banish disturbing memories show very specific patterns of brain activity.

The scans showed that two specific regions of the prefrontal cortex -- what neuroscientists call the seat of cognitive control -- appear to work in tandem to modulate posterior brain regions like the visual cortex, the hippocampus and amygdala. These areas are involved in tasks such as visual recall, memory encoding and retrieval and emotional expression.

"These results indicate memory suppression does occur, and, at least in nonpsychiatric populations, is under the control of the prefrontal cortex," the investigators reported in the journal Science.

For the purpose of the experiment, the 16 volunteers were given 40 pairs of photographs to study. In each case, an image of a neutral human face was paired with an emotionally disturbing image such as a car crash, a wounded soldier, an electric chair or a violent crime scene.

After memorizing each pair, the volunteers were placed in an MRI (magnetic resonance imaging) scanner. Once inside the machine, they were shown only the neutral face images and instructed to either actively recall the associated image or to actively suppress it.

The results of the scans or fMRIs (functional magnetic resonance imaging) indicated that the volunteers were able to "exert some control over their emotional memories," said Brendan Depue, a doctoral student in neuroscience at the University of Colorado at Boulder, and lead author of the study.

"By essentially shutting down specific portions of the brain, they were able to stop the retrieval process of particular memories," Depue said.

The authors of the paper said they hope that their work will promote further research into better therapies and possibly even drug treatments for people suffering from conditions such as PTSD, phobias, and obsessive-compulsive syndrome. The symptoms of these disorders include flashbacks to disturbing events, and intrusive or obsessive thoughts.

"The first step is to understand how memory suppression works in healthy individuals, and what neural mechanisms are at work," said Depue. "Then you need to look at those same mechanisms in a clinical population and figure out why they aren't functioning properly."


'"/>




Related medicine news :

1. Kidney Stones - Interesting New Research implicates bacteria as its cause
2. Researchers urge caution in using ear tube surgery
3. Paracetamol May Cause Live Damage Warns Consumer Education and Research Centre
4. Researchers Scale to assess the Severity of Epilepsy in Kids
5. Research of Ritalin
6. Researchers trick Alzheimers Enzyme
7. Researchers find new HIV hiding place
8. A Compilation of recent Diabetes Research articles
9. Research on causes for falling helps develop preventive strategies
10. New standards for Human Research Safety
11. Research on Celiac Disease in children
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... October 13, 2017 , ... Lori R. Somekh, founder of the Law ... organization of elder law and special needs planning attorneys. “Membership in ElderCounsel helps our ... a forum to network with elder law attorneys nationwide,” said Somekh. , ...
(Date:10/13/2017)... ... , ... Ellevate Network, the leading network for professional women, brought together some ... at their inaugural Summit in New York City in June. The event was livestreamed ... over 3 million. To watch the Mobilize Women video, click here . ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... Software Development, has been awarded a contract by the Center for Medicare and ... aims to accelerate the enterprise use of Agile methodologies in a consistent and ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and ... apnea using cutting-edge Oventus O2Vent technology. As many as 18 million Americans ... frequent cessation in breathing. Oral appliances can offer significant relief to about 75 ...
(Date:10/12/2017)... ... October 12, 2017 , ... The American College of Medical Informatics (ACMI) will ... during the Opening Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual ... F. Collen, a pioneer in the field of medical informatics, this prestigious award is ...
Breaking Medicine News(10 mins):
(Date:10/2/2017)... , Oct. 2, 2017 Diplomat Pharmacy, Inc. ... Day Software and Consulting, LLC , and named its ... Software, based in Tennessee , will ... Day expands EnvoyHealth,s service offerings for health care partners ... "In an interoperable world, ...
(Date:9/28/2017)... -- Hill-Rom Holdings, Inc. (NYSE: HRC), will host its ... on Friday, November 3, 2017, beginning at 7:00 a.m. ... 8:30 a.m. (CDT) / 9:30 a.m. (EDT). ... and guidance for 2018, Hill-Rom executives will also highlight ... and long-range financial outlook through 2020. ...
(Date:9/25/2017)... R.I. , Sept. 25, 2017  EpiVax, ... assessment, vaccine design, and immune-engineering today announced the ... on the development of personalized therapeutic cancer vaccines. ... has provided exclusive access to enabling technologies to ... Eng., MBA will lead EpiVax Oncology as Chief ...
Breaking Medicine Technology: