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Explanation of the role of the amygdala
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Amygdala in autism: Not adapting to Faces Analysis
The amygdala is a vital brain structure that regulates the mental and emotional state. If the amygdala were to be affected by a disturbance the mental conditions of the individual would be severally hindered. Disturbances to the amygdala can lead to a mental condition known as autism. The article The Amygdala in Autism: Not Adapting to Faces by Michael V. Lombardo focuses on a specific symptom of autism, the symptom is the individual not being able to adapt to faces. The author does this by analyzing a study done by Kleinhans involving this matter.
The article starts out by explaining the experiment done by Kleinhans. Kleinhans test subjects consisted of adults with autism and subjects with a stable mental condition. They would be presented with two sets of neutral faces for about five to six minutes. This would all be done while conducting a Functional magnetic resonance to the test subjects. The author Lombardi emphasis the importance of Functional magnetic resonance imaging (fMRI) tool that was used for study. Lombardi described the fMRI in the article The Amygdala in Autism: Not Adapting to Faces as (2009) “having the power to provide insight into how subpopulations of a neuron within a small area selectively respond to different stimuli” The FMRI allows the experimenter to analyze the neurons being affected by the level of stimuli in a subject. This is necessary in order to analyze the stimuli in the test subjects.
The results of the experiment revealed what occurs to people who have autism when they are trying to recognize faces. During the first set of neutral faces presented to both test subjects with autism and those that have a stable mental condition, their amygdala...
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... a few negative factors for this article. One of them is that the author does not compare as much the results of the controlled experiment to human subjects. In doing so, there would be a better understanding of case studies such as for Charles Whitman or Adam Lanza. Another negative factor could be that the author only focuses in describing about one experiment. If he described another experiment it might have helped to understand the amygdala more.
The article itself was very informative and was easy to follow. The only problems were that in the beginning it was difficult to follow and in some areas of the article the analysis of the experiments seem to be repeated too much, the depth of information and the comparison between the experiments described with what occurred with the groups with or without autism helps to understand the importance of the amygdala.
In her excerpt, Baumrind discusses the potential dangers of the aftereffects on the participants of the experiment. On many occasions she suggests that these people are subjects of a cruel and unethical experiment, and suffer from harm to their self-image and emotional disruption (227). She also calls Milgram’s experiment a “game” (Baumrind 225); this illustrates her negative outtake on the experiment which is seen throughout the article. On the contrary, Parker discusses the aftereffects on Milgram himself. He expresses how the experiment, although it shows light to what extent of obedience a person may travel, ruined Milgram’s reputation. Parker also cites many notable authors and psychologists and their reactions to Milgram’s experiment. Despite their differences, Baumrind and Parker are able to find common ground on a few issues concerning the Milgr...
Rowe, Peter. “Delving into the Mystery of Autism.” San Diego Union-Tribune 16 October 2001. 9 December 2001
Have you ever heard of the term ASD? What are your thoughts when you see a child in public who is misbehaving? Well the two of these questions might be linked together. ASD is better known as autism spectrum disorder which is a disorder of the development in the brain according to Autism Speaks Inc. (2015). Due to this developmental issue children can be thought of as being bad or unruly, but in reality they cannot help it. The reason it may seem that way is because the brain isn’t processing like it should be. The brain may be sending multiple messages to the body at one time or to the wrong places in the body which can cause children to seem bad. According to Autism Speaks Inc. (2015) there are multiple variances of autism. Although we know
Going into details of the article, I realized that the necessary information needed to evaluate the experimental procedures were not included. However, when conducting an experiment, the independent and dependent variable are to be studied before giving a final conclusion.
“The Benefits of Skinner's Analysis of Verbal Behavior for Children with Autism” Behav Modif., by Sundberg, ML, and Michael J., published in 2001, summarized Oct 19, 2006
First off, autism is not a form of mental retardation despite what the general public may have you believe. In actuality, autism, which was first described by Kanner (1943) in his study of 11 children with “autistic disturbances of affective contact” (US: American Psychological Ass...
...gether in forming a single thought or cohesive image, we also begin to see how the damaged or inoperable regions of the brain affect a persons perception of emotions. In 1999 during a magnetoencephalography (MEG) study, M. Streit found that judging emotion from expression elicited a stronger response than simple face detection first in posterior superior temporal cortex and later elicited a response in the right amygdala, providing a direct demonstration of interaction between these regions in the perception of emotions in faces. Patients with face blindness who see a look of fear in another’s face have areas of their amygdala respond, showing that although they are unable to recognize the face they are looking at, they are still able to perceive emotion. These findings continue to illustrate the point that each other of the brain works together to form the idea we
...experiment, felt that the experiment made such a deep impression on him that he became convinced that “social sciences and psychology, are much more important in today’s world.'; One can only imagine the inner conflicts that were running through his head. After the experiment, he described the mood, “I did want to stop at that time. I turned around and looked at [the experimenter]. I guess it’s a matter of…authority.';
Ramachandran, Vilayanur S., and Lindsay S. Oberman. "Broken Mirrors: A Theory of Autism." Scientific American Journal. (2006): 62-69. Web. 29 Nov. 2013.
There is no known single cause of autism. Researchers are investigating a number of possible theories including genetics, heredity, medical problems, problems during pregnancy or delivery, as well as environmental influences. It is widely accepted that it is caused by abnormalities in the brain structure or function. There is evidence from neuropathological studies that autism has its origins in abnormal brain development early in prenatal life which continues postnatally, showing acceleration in brain growth measured by head circumference (Zwaigenbaum, L., Bryson, S., Rogers, T., Roberts, W., Brian, J., & Szatmari, P., 2005). The disorder also seems to have a genetic basis, although researchers have yet to find the specific genes that link to the onset of autism. There could be a cluster of genes that have somehow interfered with normal brain development and function. Studies show that twins of children with autism were more likely to be autistic themselves than the regular population, demonstrating there is a heredity lin...
In the United States, the Center for Disease Control and Prevention reports that between 1 in 80 and 1 in 240, for an average of 1 in 110 children have an autism spectrum disorder, “ASD” (Nirv, Shah 2011). According to the National Institute of Neurological Disorders and Stroke, up to six out of every 1,000 children may be diagnosed with some form of autism. In addition, boys are four times more likely than girls to have autism. This means that as many as 1.5 million Americans today are believed to have some form of autism. Unfortunately, the numbers appear to be increasing rapidly. Autism is a disability that frequently appears during the first three years of life. It is the result of a neurological disorder that affects the functioning of the brain and impacts the normal development of the brain in the areas of social interaction and communication skills (Bee & Boyd, 2009). It is the most prevalent developmental disorder to date. Autism is one of five disorders coming under the umbrella of Pervasive Developmental Disorders (PDD), a category of neurological disorders characterized by "severe and pervasive impairment in several areas of development," including social interaction and communications skills (Zager, 2006). The etiology of autism is a topic of controversial debate, while researchers strive to achieve a common objective. The goal is to identify the cause of autism to understand the complex interplay between environment and gene regulation (NCBI, 2009). Although individuals with autism have existed for many centuries it was not recognized and labeled until mid 20th century. Therefore, early detection, intervention and an individual educational plan are essentials for the progress of ASD.
... to one single neuron, eliminating cats and other animals from brain altering tests (“Alternatives” 2-4).
Autism is a neurodevelopmental disorder that effects the brains development. It is characterized by affecting communication, cognition and social interaction. The spectrum of the disorders ranges from a mild condition called Asperger’s syndrome to a more severe form, which severely impairer’s development. The Office of Communications and Public Liaison states that the disorder affects one and eighty-eight children, however ASD effects boys more frequently than girls (Office of Communications and Public Liaison, 2013). ASD emerges in all age, ethnic and socioeconomic groups. The significant varied character and severity of the disorder is why ASD is considered a spectrum that poses a broad range of symptoms.
Functional Magnetic Resonance Imaging (fMRI),which is one of the most exciting recent developments in biomedical magnetic resonance imaging, allows the non-invasive visualisation of human brain function(1).
Although all four structures work in concert with one another, each is observed to have a distinct function. Specifically, the amygdala is thought to be responsible for recognizing other’s emotional states; the STC analyzes body movements in order to predict the actions, or intentions, of others; the OFC is involved in social reinforcement; and the FFG plays a role in face detection (Pelphrey, Shultz, Hudac & Vander 2011). Support for this model can be found in numerous studies. For example, in an fMRI study of facial identity and expression, it was found that the amygdala was activated to various degrees when subjects were shown different emotional expressions (Gläscher, Gläscher, Weiller & Büchel 2004). In another fMRI study, the STS was activated when subjects observed humans moving, but not while inanimate objects moved (Pelphrey, Shultz, Hudac & Vander 2011). Furthermore, evidence for the OFC as an important structure for reward was seen when monkeys worked for electrical stimulation of this region when they were hungry, but not if they were satiated (Rolls 2000). Finally, the FFG, which contains a region called the fusiform face area (FFA), was shown to be