The Influence of Stress on Dopamine Levels
In the quest to survive, every living organism is equipped with the armor to withstand the impacts of stress. The African savanna leaves the zebra in an anxiety-ridden position of vulnerability to predators. Stress may can be as basic as the lack of food, habitat, or reproductive success. Humans are especially aware of the impacts of stress due to the nature of todayâs contemporary lifestyle. Too many daily demands can give a person anything from insomnia to indigestion to depression. Every person is equipped to naturally deal with large amounts of stress, but when these amounts exceed what the body can handle, discomfort is considerable.
Besides the qualitative approach to coping with stress, what bodily mechanisms are responsible for dealing with anxiety? The nervous system is almost solely credited with this task. The complex interaction system between billions of individual neurons facilitates large number of behaviors that result due to inputs originating inside and outside the organism. Spaces between neighboring neurons are called synapses, and one way in which they communicate is by sending chemical signals called neurotransmitters across the presynaptic membrane to the postsynaptic membrane. Years of nervous system research have determined that stress activates the neurotransmitter, dopamine.
The functions of dopamine are numerous, but in general it inhibits transmission of nerve impulses. This transmitter is found throughout the body, though mainly housed in the brainâs interior basil ganglia, in the frontal lobe of the information-processing center of the brain, or in the limbic system (1).
Many chronic diseases result from the overproduction or underproduction of dopamine. The dopamineâs inability to move into the frontal lobe of the brain results in the inability to control fine motor movement and is familiarly called Parkinson Disease(1) . If the flow of dopamine throughout the nervous system is not allowed to circulate as usual, then schizophrenia follows (1).
Now that the extreme abnormalities of dopamine have been discussed, letâs look at how dopamine affects the average person who is subjected to a stressful environment.
One study maintains that the chewing behavior of mice is a response to stress, and therefore it serves as a coping device. The body responds to stress by the activation of the cerebral dopaminergic (DA) system. The study shows that when given the option of chewing, the activation of mouse DA system is drawn out (2) In other words, when allowed to chew, a mouseâs body will have prolonged the presence of stress-managers; this coping mechanism reduces the impact of the stress.
My name is Dr. Carrie Zimmerman; I have been a clinical neuroscientist studying stress for the past five years. This is a personal stress case study on patient H. I have been seeing patient H for four years, and have been building a case study on her stress life for the duration of that time. Throughout this case study I will be consulting “Why Zebras Don’t Get Ulcers” by Dr. Robert M. Sapolsky.
Prolonged stress or distress can be a hindrance to the homeostasis of the animal and cause responses in the body that induce the animal to overwork its physiological systems. The animals that endure this prolonged stress are placed into an inevitable environment or circumstance where the animal either is or feels trapped or captured.
According to the U.S census, about 80% of people with phantom limb experience extreme excruciating pain coming from the stump. In fact, Ramachandran and Hirstein authors of “The Perception of Phantom Limbs” (1998) report that the pain haunts victims and remains painful even 25 years after loss of limb. Hence, suffering is chronic especially after an immediate amputation of a limb, where patients describe the pain as itching, burning, stabbing, or tingling. In most cases, pain interferes with work and social life and becomes a heavier burden than the paralysis itself. There’s nothing really phantom or imagined about this suffering; however, contrary to what the amputees feel, the pain is generated by the brain not originated in a limb that doesn’t exist. To be more specific, the intensity of the pain could be found in the neurons of the brain. With this in mind, one must be sure that phantom limb syndrome is certainly not a modern discovered occurrence; however, the exact cause of this sensation has puzzled scientists for dec...
... his words that he committed a great evil; we live in peace with our fellows to honor our great goddess of the earth without whose blessings our crops will not grow. You have committed a great evil (Achebe 30). Okonkwo displays another fit of anger during the feast of the new yam, when he almost killed his second wife with a gun because she cut a few leaves off the banana tree to wrap some food. Without patience to discern her explanation; she was beaten mercilessly and almost got killed. Okonkwo lacked a sense of affection towards his family, which can be linked to his fear of weakness. He repudiates any show of emotion or patience in order not to appear weak. His household lived in a perpetual fear, he never gave them the opportunity to get close to him without been scared of him, and this really had a great effect with the relationship he had with his household.
Joletha Cobb, a minister and an NCCA licensed clinical pastoral counselor, explained the expectations of genders in accordance with past centuries with an emphasis on the bible. Women “were expected to bear children, stay home, cook and clean, and take care of the children” (Cobb 29). They were expected to be weak, timid, domestic, emotional,...
As suggested earlier, however, the physiological component of disability is distinguished from disability under the motion of impairment. Tom Shakespeare explains that key to the Social Model of disability is a “series of dichotomies,” one where “impairment is distinguished from disability.” For example, the Social Model accepts that deafness is a physiological impairment that person’s participation in society is limited, to some physical extent. And, even assuming if society was to completely accept individuals with disabilities, without prejudice or categorization, there would nonetheless be physical limitations. Nevertheless, the crucial assertion under the Social Model is that “disability” is, by definition, a social
In the 2008 National Geographic documentary Stress, Robert Sapolsky and other scientists explain the deadly consequences of prolonged stress. “If you’re a normal mammal,” Sapolsky says, “what stress is about is three minutes of screaming terror on the savannah, after which either it’s over with or you’re over with.” During those three minutes of terror the body responds to imminent danger by deploying stress hormones that stimulate the heart rate and blood pressure while inhibiting other functions, like digestion, growth and reproduction.
In the end “The Short Bus: A Journey Beyond Norma;”, by Jonathan Mooney was very inspiring, and brought up many different aspects of how the educational system may need to re-examine their approach to those who do suffer from learning disabilities like ADD/ADHD, and Dyslexia. All of which I will take into consideration in my further as a teacher. After all even those who suffer from different learning disabilities, still deserve the best education possible.
Phantom pain refers to the phenomenal experience of pain in a body part that has been amputated or deafferented (Flor, Nikolajsen & Jensen, 2006). The characteristics of phantom pain have been described to occur in quick and sudden attacks of pain shooting up and down the amputated limb as well as cases of constant, excruciating pain whilst intensely perceiving the amputated limb to be cramped or postured abnormally (Katz, 1992). Approximately eighty percent of amputees report suffering from or at least experiencing some level of phantom pain post amputation; therefore it is a prominent issue (Flor, Nikolajsen & Jensen, 2006). Phantom pain is neuropathic pain that has no individual trigger but instead a plethora of psychobiological aspects of neuroplasticity that contribute to the cause of phantom pain (Grusser, Diers & Flor, 2003). The following will: outline the role of the peripheral and central factors associated with phantom pain and discuss the cortical reorganisation of the somatosensory cortex in relation to phantom pain.
Today, women share the same equal rights and opportunities as men; nevertheless, that has not invariably been the case. Before the Jazz Age era, gender discrimination between men and women in society was considerably popular. Women were seen as inferior to men. Their jobs were to care for the home, children, and other domesticated duties while men were able to work, get an education, and become doctors or lawyers. Many women like Susan B. Anthony, Elizabeth Cady Stanton, Ida B. Wells, Sojourner Truth, Zora Hurston, to mention a few, seen the unfairness in women's rights and fought for equal rights for women through different movements, efforts, protests, and even marches to abolish women’s rights. As a consequence, women now pursue not only higher education and higher paid jobs/ businesses, but their rights. One of the world’s most controversial issues among churches of today is the role of a woman. Many people are confused about the duty of a woman and how she is supposed to serve God because of history. History taught us to never deny someone of gender, race, or even diversity since he or she has human rights. However, this issue should not be viewed as men versus women because this is not a political issue; instead, it should be viewed as the structural of a church. Women should not be priests, pastors, or even rabbis for God condone women for being priests, pastors, and rabbis as well as proscribed.
In the video presentation of How Difficult Can This Be? The F.A.T. City Workshop, Richard Lavoie is able to simulate several of the difficulties that a student with a learning disability has to face at school. Some of the difficulties experienced by the students are intrinsic to the disability itself, but many other difficulties are directly related with the emotions that the student experiences when attending a class, and as a result of his or her interactions with teachers and classmates. Both the United States law and the education system, have the opportunity to make a huge difference in the learning experience of every student with disability. Students with disabilities need to be guided to a path to education that is both feasible and accessible for them; with achievable goals, and by being provided what they need in order to succeed, and to be able to overcome any obstacles.
According to a survey conducted by the Center for Disease Control, 22.2% of the United States population reported having some sort of disability (2013). While the Americans with Disabilities Act (1990), acts to prevent the discrimination of people with physical and mental disabilities, it has been unsuccessful in erasing it all together. Almost a quarter of the US population is disabled, meaning that almost a quarter of the population face some form of inequality due to their physical
Campbell, F., Singer, G., & Schofield, P. (1983). Stress and Illness. Stress, drugs and health: recent brain-behaviour research (p. 32). Sydney: Pergamon Press.
Persons with disabilities are exposed to societal barriers which affect them greatly in terms of belonging in society. It is important to examine social policies surrounding persons with disabilities to educate people along with eliminating the issues altogether. Persons with disabilities confront discrimination daily, nearly everywhere in society because of new and old negative stigmas. Prejudice is most often seen in persons with disabilities towards women, employment, housing, recreational activities, education along with politics and multiple more matters. Discrimination against women with disabilities, employment and housing will be examined thoroughly throughout this paper. Thun states women are at a greater disadvantage when labelled
The behavioral response to stress involves coping. “Coping refers to active efforts to master, reduce, or tolerate the demands created by stress” (Weiten & ...