solved Discussions#1The quick release of dopamine that is dispersed into the

Discussions#1The quick release of dopamine that is dispersed into the nucleus accumbens leads to it becoming dependent on the feeling and the intensity at which it is deposited. The neurotransmitter, dopamine is a chemical found in the brain that is in charge of the control of the body’s movement, pleasure and reward. The method in which a drug is deposited in the body can also effect how fast the body produces dopamine. Smoking or injecting a drug into the body is a faster method of receiving the effects of the drug rather than ingesting it through the form of a pill. The way in which the drug is received by the body can also become a factor in why a drug is misused or abused. The drug induced high that the body begins to crave leads to the dependency in order to got through day to day life. Some people may be more likely to become addicted to a drug than others due to genetic factors. If an individual has a family background of addiction to drugs, there is a much higher chance that that individual will also gain a dependency and crave the dopamine high of the drug. Stimulant drugs such as speed, blow, and coke can increase arousal, alertness, decrease appetite, and anxiety within the body. The neurotransmitter, dopamine that is dispersed in the nucleus accumbens in large amounts is involved with the control, pleasure, and reward effects on the brain. Dopamine is the main factor in which a person begins to feel a physiological and psychological dependence on the body. Stimulants provide a short cut to the reward system found in the brain. Depressant drugs such as alcohol, barbiturates, and nembutal on the other hand can decrease arousal and anxiety. Creating a dependency on any type of drug can cause withdrawal symptoms. For example, a withdrawal from stimulant drugs can cause fatigue, prolonged sleep, depressed and more. In comparison, a withdrawal from narcotics can cause sweating, chills.#2 The corpus callosum is the part of the brain that is cut into to control some epileptics. In the video above, Vicky is an epileptic patient and she is also a split brain patient, surgeons cut into the corpus callosum to control Vicky’s epilepsy. But because Vicky is a split brain patient her right hemisphere of the brain does not communicate with her left hemisphere. Vicky being a split brain patient was having trouble doing some things like picking out her clothes, her brain would choose the shirt she did not want rather than the shirt she did want. When Dr. Gazzaniga was testing Vicky’s brain, he showed her a picture of a woman on the telephone, she was looking at the picture and couldn’t describe what she was seeing besides the word “woman”. Dr. Gazzaniga had Vicky write out on a piece of paper what else she was seeing with her eyes closed, Vicky wrote “telephone”. Vicky was able to describe what she was seeing because her right hemisphere doesn’t have the language to describe verbally what she was seeing but her left hand can write it out. Her right hemisphere guided her to write out the word “telephone” with her left hand. The left hemisphere had read the word as “skipping rope” because it could not recognize what she had seen in the photo but once she was told it was “telephone” both hemisphere’s came together and she understood that it was “woman on the phone.” When splitting the brain for epileptic patients, a lot gets eliminated. As explained by Dr. Gazzaniga, If he were to flash a light by the right hemisphere the left hemisphere will see it and name it but if he were to do that same method to the left hemisphere the right hemisphere would not be able to name it and recognize it because of the elimination due to the brain being split. The brain being split and seeing two words caused Vicky to do what those words were saying instead of verbally saying what the words were because both hemisphere’s were put to work. The left hemisphere is where all your processing and language happens whereas the right hemisphere is where the recognition, drawing, and emotional expressions happen. Epilepsy can affect the temporal lobes which are on both sides of the brain (left and right hemisphere) which is why the brain gets split so the temporal lobes do not get damaged and both sides of the brain still function.