Physical Changes In The Brain

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A brain is the central part of nerves system in our bodies which is responsible for the collection, analysis information and manages and controls most of the members in the body. The brain is made up of millions of nerve cells when the baby is born. It goes through many physical changes in human’s lives. Here we focus on the major of these physical changes which are pruning, myelination and delegation, so these changes affected the brain’s abilities through the stages of human life, infant (pre-and post-partum), teenager and mature adult.
The first change in the brain is that Pruning is a process that happens in a brain to remove an unnecessary connection, and it continues working in the human’s life stage. The second process is myelination
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This integrates occurring when the brain becomes myelination entirely. However, according to Susan Tapert, Associate Professor of Psychiatry at the University of California at Sand Diego (USA), there are areas of the brain has not been completed integration based on testing has done using MRI. She tasted 25 young teens (ages 12 to 14) and 24 older teens (age 15 and 17), and she found that older teen’s brain used smaller area than did younger teens. Indeed, at teens age, there are many areas to perform different functions. As a result, the teen’s brain need fewer pathways to do tasks (Tapert 2007, pp.122-127). The sectors that are responsible for decision-making and controlling behavior are also undergoing significant changes. Synaptic pruning is responsible for cutting off unnecessary communications that are not required between the neurons, so this leads more efficient carriage of nerve signals. As a result of improved brain’s tasks, both myelination, and synaptic pruning has changed in teens’ brain. These changes lead to increase the ability to control teen’s behavior. Giedd shows that the changes in the pathway’s wiring, which is responsible for making the decision is similar to the changes in the prefrontal cortex’s wiring which is responsible for connecting the brain area (cited in Giedd 2006, p.68). Pruning is an ongoing process in teenagers, even if …show more content…
The logical reasoning which is using the information to solve a problem reaches a peak in young adulthood, but the amount of gray matter begins a decline. Thus, the adults start thinking efficiently rather than thinking fast, and they start to save their energy to do many activities. (cited in Salven2008, pp.201-203). On the other hand, learning a new language is hard for an adult because their brain is not flexible. McClelland believes that the neural circuits can rewire, so the adult can learn because of the new pathways. He works to prove that the adult’s brain can be more flexible for a long time. The White matter continues to leak into the areas of flexibility in the brain, frontal and temporal lobes, for a long time. However, there are some areas start shrinking because of losing the valuable sources. MRI scans of young and adults reveal that the decline of nerve- cell can cause by pruned. This pruning happens for the brain’s cells which are rarely used (cited in Raz2009, pp.106-109). Batzoxis agrees with Ras for pruning process which is going on of brain circuits. Because of myelin invaded gray matter, it disappears, but these areas that are heavily used become myelinated (Batzokis2008, pp.73-77). According to Cohen, myelin pathways can transmit a signal more than 13 times per second when compared with unmyelinated. Moreover, in the 30s, some parts of the brain which

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