How The Amygdala's Emotional Function Can Affect Sufferers Of Post Traumatic Stress Disorder ( Ptsd )

When humans undergo traumatic events that threaten their safety and wellbeing, they may become vulnerable to nightmares, fear, excessive anxiety, depression, and trembling. Post Traumatic Stress Disorder (PTSD) is a psychological illness that results from the occurrence of a “terribly frightening, life-threatening, or otherwise unsafe experience” (Posttraumatic Stress Disorder (PTSD), 2012). This condition often leads to unbearable stress and anxiety. PTSD is significantly prevalent as indicated by data from the National Co-morbidity Survey which shows that at a particular time in their lives, 7.8% of 5, 877 adults in America suffered from PTSD (Andrew & Bisson, 2009). In the general population, the lifetime prevalence is estimated at 8%,

It was not until the 1980’s that the diagnosis of PTSD as we know it today came to be. However, throughout history people have recognized that exposure to combat situations can have profound negative impact on the mind s and bodies of individuals in these situations. But there are other catastrophic events that can have such profound impact on people resulting in PTSD…

Traumatic events also produce profound and lasting changes in physiological arousal, emotion, cognition, and memory. Moreover, traumatic events may result in the severance of these normally integrated functions from one another. Traumatized individuals may also suffer from the memories of the tragic or horrifying experiences they have undergone. Frequently, as a result of these many symptoms, it becomes inevitable for the individual to develop certain complications associated with trauma-related disorders, such as posttraumatic stress disorder.

At least 50% of all adults and children are exposed to a psychologically traumatic event (such as a life-threatening assault or accident, humanmade or natural disaster, or war). As many as 67% of trauma survivors experience lasting psychosocial impairment, including post-traumatic stress disorder (PTSD); panic, phobic, or generalized anxiety disorders; depression; or substance abuse.(Van der Kolk, et al, 1994) Symptoms of PTSD include persistent involuntary re-experiencing of traumatic distress, emotional numbing and detachment from other people, and hyperarousal (irritability, insomnia, fearfulness, nervous agitation). PTSD is linked to structural neurochemical changes in the central nervous system which may have a direct

For many, PTSD is a big issue. Because of this, research has started to look at its causes. First to understand PTSD, one must examine the

Dr. Viatcheslav Wlassoff posted an article on Brain Blogger about the different areas of the brain affected by PTSD. He goes on to say that stress and certain parts of the brain trigger the flashbacks and other symptoms that come with PTSD. The following parts of the brain, amygdala, hippocampus, and the prefrontal cortex, are the parts of the brain in PTSD affected and the most significant is the hippocampus. (Wlassoff)

Post-traumatic stress disorder, better known as PTSD, is steadily becoming a more relevant topic of conversation in our society today. Recently this disorder has received a lot of attention due to the conflicts our military personnel are currently engaged in around the world. Another event that brought PTSD to forefront were the tragedies of 9/11. PTSD is one of the rare disorders that are a direct result of an outside traumatic event. Make no mistake about it, PTSD might be a relatively newly diagnosed disorder, but it has been around for many years. Our military servicemen had reported these conditions for many years before, now we finally have a It is an unfortunate truth that many people in our society are involved in traumatic

The hippocampus, memory and organization portion of the brain, and the amygdala, the “fight or flight” portion, are both confused by PTSD (“PTSD and The Brain”, 2-3). For example, if an Iraqi soldier hears a helicopter overhead, the hippocampus remembers the sound of the helicopter and works with the amygdala to associate that noise with a traumatic war event. The amygdala then will induct a fight or flight response, causing symptoms of PTSD to initiate. (Ibid, 3) While symptoms can be difficult, the hardest part of having PTSD, is sometimes admitting you have a disorder.

Morris states that PTSD is often thought of as being a syndrome of remembering things too well. He adds that “the ones who ‘forget,’ they suffer later” (Morris 35).

Various models have been developed to explain the memory and concentration problems manifested by patients affected by post traumatic stress disorder. These models relate the cognitive problems with these patients with the changes in the brain structures that function in learning and memory. The first model is described as fear structure, whereby the brain of the affected individuals become programmed to process information associated with the threatening experience and subsequent physiological, physical and behavioral responses. Another information processing model is based on cognitive theory, with an assumption that the disorder progresses only if a person perceives the traumatic incident in a manner that makes the incident to become threatening after it has taken place. The perception of the trauma as being present results into intrusions and reliving symptoms, anxiety, and over alertness. Subsequently, the affected individual tries to decrease perceptions of the threat through behavioral and cognitive modifications, although these changes further perpetuate the symptoms (Rosen, 2004).

During the 1980’s an anxiety disorder known as PTSD, or Post-Traumatic Stress Disorder, was recognized when one experienced something horrific and then began to re-experience the traumatic event (Bobo, Warner, and Warner 799). Post-Traumatic Stress Disorder can not be cured, only treated. PTSD was originally brought into perspective when combat Veterans could no longer face their experiences on the battlefield. As years went on, victims of rape, assault, or witnesses of a traumatic event were also diagnosed with PTSD. Although society knows the name of this disorder, PTSD is often underrecognized and under-treated (Bobo, Warner, and Warner 797). Many know that it is an anxiety disorder, but few understand the risks that come along with it.

Our most vivid memories are those tied with strong emotional memory components. For those suffering from Post-Traumatic-Stress Disorder (PTSD), the emotional component of a memory makes recalling certain life events painful and debilitating. PTSD is an anxiety disorder that develops from the exposure to a traumatic event and often seen in comorbid patients also afflicted with alcoholism, depression, and general anxiety. Because this disorder is so debilitating, finding prevention treatments becomes essential to ensuring the mental health of so many individuals world-wide.

Ehring, Ehlers, and Glucksman (2008) wanted to examine the cognitive variables that predict emotional disorders, including PTSD. The

It is the goal of this paper to demonstrate that the phenomenon of PTSD, despite the fact that its multiple emotional and psychosocial effects are constantly being debated, is soundly rooted in neurobiology, and that this aspect of PTSD lends support to the notion that brain = behavior.

The amygdala is known to learn from exposure to fear and store assessment of threat–related stimuli. The prefrontal cortex is involved in extinction and the retention of fear and is connected to the amygdala. Finally, the hippocampus encodes the context during fear learning process and sends it to the amygdala. People with PTSD have hyper-activity in the amygdala, while having hypo-activity in the prefrontal cortex and there is reduction of the hippocampus volume. This reduction may limit proper evaluation and categorization of the experience. A study on Vietnam soldiers revealed that lesions in the amygdala and prefrontal cortex resulted in the absence of PTSD. To get further into the molecular level studies been done on the hormonal system. “Stress is known to contribute to the pathogenesis of a variety of disorders, including the majority of psychiatric like major depression and posttraumatic stress disorder.” (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3825244/pdf/DM30-02-343616.pdf). Research has revealed evidence that a hormonal system known as the hypothalamic-pituitary-adrenal (HPA) axis is the one that gets disrupted in people with PTSD. The hormonal system is involved in normal stress reactions, so the disruption of this system in people with PTSD creates this “false alarm”. It has been suggested by some scientist that the dysfunction of the HPA system results in hippocampal damage in people with PTSD. Damage in the hormones is caused by damage to