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Due to brain damage, 10-year-old Genna underwent surgery to remove nearly the entire right hemisphere of her brain. Which of the following observations the day after the operation best illustrates the brain’s plasticity?
(A) Genna was able to understand what was said to her.
(B) Genna was able to speak.
(C) Genna was able to move her left hand.
(D) Genna was able to move her right leg.
(E) Genna was able to solve a logic problem.
Spoiler
Answer
(C) Genna was able to move her left hand.
Spoiler
Explanation
The right hemisphere controls the left side of the body and is important in recognizing faces, doing spatial tasks, and all sorts of creative pursuits. The left hemisphere plays a larger role in speech and language, logical problems, and controlling the right side of the body. Plasticity is the brain’s ability to change as the result of experience, and one way it is illustrated is when the functions of a damaged part of a brain are taken over by another part of the brain. Since most of Genna’s right hemisphere was damaged and removed, plasticity is shown by her ability to perform functions associated with that hemisphere after the surgery. The only behavior associated with the right hemisphere is moving her left hand.
Posted : 10/05/2024 3:35 pm