Post Traumatic Stress Disorder

How stress aids memory

Retrieving memory content under stress does not work very well. However, stress can be helpful when it comes to saving new information—especially those that are emotionally relevant in stressful situations. At the Ruhr-Universitat ...

Nov 19, 2014
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Hacking health care

For as long as she can remember, Andrea Ippolito has known that she wanted to be an engineer.

Nov 19, 2014
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How to erase a memory—and restore it

Using a flash of light, scientists have inactivated and then reactivated a memory in genetically engineered rats. The study, supported by the National Institutes of Health, is the first cause-and-effect evidence ...

Jun 01, 2014
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Outside the body our memories fail us

New research from Karolinska Institutet and Umeå University demonstrates for the first time that there is a close relationship between body perception and the ability to remember. For us to be able to store ...

Mar 10, 2014
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Posttraumatic stress disorder (PTSD) is a severe anxiety disorder that can develop after exposure to any event that results in psychological trauma. This event may involve the threat of death to oneself or to someone else, or to one's own or someone else's physical, sexual, or psychological integrity, overwhelming the individual's ability to cope. As an effect of psychological trauma, PTSD is less frequent and more enduring than the more commonly seen acute stress response. Diagnostic symptoms for PTSD include re-experiencing the original trauma(s) through flashbacks or nightmares, avoidance of stimuli associated with the trauma, and increased arousal—such as difficulty falling or staying asleep, anger, and hypervigilance. Formal diagnostic criteria (both DSM-IV-TR and ICD-10) require that the symptoms last more than one month and cause significant impairment in social, occupational, or other important areas of functioning.

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