Psyc Project Essay

920 words - 4 pages

Another way to look at OCD is from the biological perspective, which looks at the genetics, biochemical and brain structure of a person to find a reason why a person acts this way and develops OCD. Genetic studies have demonstrated that both biological and environmental factors are important to the development of OCD. No specific gene for OCD has yet been identified. Twin studies confirmed that there is a genetic component that causes OCD. Many researchers found that, in twin studies, monozygotic twins were more concordant with OCD than dizygotic twins were. The higher concordance in monozygotic twins than dizygotic twins imply that there is some type of genetic transmission. The fact that ...view middle of the document...

Therefore, these “prepared” fears are not inborn or innate but are acquired or resilient to extinction. Researchers found that people acquired responses to fear-relevant stimulus rather than fear-irrelevant stimulus. Obsession in OCD –such as contamination and dirt- was a threat to our ancestors and may have the same kind of preparedness element.
Neurotransmitters are chemical messengers that pass information from one nerve cell in the brain to the other. Serotonin is a neurotransmitter that is responsible for controlling many biological functions including, anxiety, moods, memory, and etc. Serotonin is believed to be involved in the development of OCD but it’s not known for sure how it contributes to OCD. However, people who are diagnosed with OCD have a decreased level of these chemicals in the brain. Researchers believe that when there’s a malfunction in the level of serotonin, this leads to the development of OCD. Malfunctions in other neurotransmitters are also involved in the development of the disorder, such as, dopamine.
There has been evidence that a brain dysfunction might be a cause for the development of OCD. Studies have shown that people with OCD have abnormal activity in three areas in the brain, which are, the caudate nucleus, the prefrontal orbital cortex, and the cingulate gyrus. The caudate nucleus is an essential structure of three structures that make up the basal ganglia, which is located deep in the center of the brain. This area acts as a passage for the thoughts coming from other areas and is considered to be important in controlling usual and recurring behaviors. The prefrontal orbital cortex, which is located in the front area of the brain, level of activity is believed to affect social behavior. When the level of activity in the prefrontal orbital cortex...

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