Paul Pomagrin
ESL 91
Fall, 2003
Essay Topic: Research
the neurotransmitter, dopamine. Explain how this neurotransmitter works and
what its function is in the body and the brain. Be sure to concentrate on how
dopamine affects behavior. What happens when something goes wrong in the
system; for example, when there is too much or too little dopamine? What
treatments are there?
Dopamine
is a very important neurotransmitter that plays a main role in the human brain.
Dopamine affects brain processes that control movement, emotional response, and
the ability to experience pleasure and pain. The body needs to have a certain
amount of dopamine in order to function normally. A neurotransmitter is the
chemical that enables the brain to send messages. If dopamine is in correct
amount in the brain, it gives the ability for: learning, remembering things,
concentrating etc. When the brain receives an imbalanced amount of dopamine it
causes problems. If there is too much dopamine in the brain it can cause
schizophrenia. If there is too little dopamine it can cause Parkinson’s. Drugs
can treat problems with dopamine.
Parkinson’s disease is a disorder of the brain that
affects muscle movement. Parkinson’s disease is caused by too little dopamine
in the brain. Dopamine helps the nerve cells to transmit messages properly, but
without dopamine it can damage the part of the brain that controls muscle
movement. People with Parkinson’s disease might shake and have difficulty with
walking, movements, and coordination. There is no cure for Parkinson’s disease,
but there are treatments. The treatment for Parkinson’s is to take some drugs
such as Benstropine or carbidopa
/ levodopa.
Schizophrenia is an emotional and mental disorder that
makes a person out of touch with reality. Chemicals like dopamine play an
important part in schizophrenia. When there is too much dopamine in the brain
it cannot control the person’s behavior and emotions. Also schizophrenia can
cause hallucinations, delusions and illogical thinking. Like Parkinson’s disease
there is no cure yet, only treatment. Antipsychotic drugs can help to balance
and control the release of dopamine.
Dopamine is a chemical messenger everybody uses everyday
in their body. Chemical messengers are very helpful when they function correctly,
but they are harmful when they do not function correctly. Chemicals can’t be
imbalanced when already in the brain. Nobody can control the release of
dopamine in their body.
Dopamine is very important in our brain and body because
it affects our behavior and the ability to experience pleasure and pain. The level
of dopamine plays a crucial role in our mental and physical health. In
Parkinson’s disease there is too little dopamine and in schizophrenia the brain
releases too much dopamine. Both of these diseases have a medical treatment.
Scientists have a lot of information about these diseases. I hope in the future
there will be vaccines that can help a person balance their dopamine level.