b. stereotaxic atlas
Dr. Ahmed will use a stereotaxic atlas, or a three-dimensional map of the brain, and a computer, to make sure the electrode is placed in the correct location in the rat. A stereotaxic atlas is a number of records of brain structure of a particular animal.
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c. destroying the lateral hypothalamus.
The lateral hypothalamus is a part of the hypothalamus, which is a part of the brain. This part regulates the vital functions, such as body temperature, the hunger and satiation regions and so on. Some eating disorders and motility disorders are being associated with some dysfunctions of the hypothalamus.
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b. are the hunger and satiation regions of the brain respectively.
The lateral and ventromedial hypothalami are the hunger and satiation regions of the brain respectively. They are both parts of the hypothalamus, which is a part of the brain located near the amygdala. All vertebrates have a hypothalamus, and in humans, it has the size of an almond.
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a. begin to lose weight if they initially gained weight, or gain weight if they initially lost weight.
Rats who have had their lateral or ventromedial hypothalamus destroyed, begin to lose weight if they initially gained weight, or gain weight if they initially lost weight. That is because their lateral or ventromedial hypothalamus is the part of the brain that regulates hunger and satiation.
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c. lateral hypothalamus and ventromedial hypothalamus
When studying motivated behavior, including eating, rats can be used to predict human behavior because the lateral hypothalamus and ventromedial hypothalamus in a rat’s brain is similar to that of a human. So, they are very suitable for this type of study.
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d. they have stimulated the lateral hypothalamus or destroyed the ventromedial hypothalamus.
When a rat in an experiment has started eating more food, the cause it is likely to be that has stimulated the lateral hypothalamus or destroyed the ventromedial hypothalamus, since these regions are the part of the brain that regulates hunger and satiation, therefore a stimulus or a removal could affect the rat in those ways.
