The concept of neuroplasticity has revolutionized our understanding of the brain's capacity for change. Historically, it was believed that the adult brain was structurally fixed, with neural circuits becoming immutable after a critical period in childhood. However, recent research demonstrates that synaptic connections can be strengthened or weakened in response to experience, and even new neurons can be generated in specific regions such as the hippocampus. This plasticity is not uniform across the lifespan; it declines with age but remains significant, particularly in learning and memory. Moreover, neuroplasticity has profound implications for rehabilitation after brain injury, as undamaged areas can sometimes assume functions of damaged ones. Yet, this adaptability is a double-edged sword, as maladaptive plasticity can contribute to chronic pain or phantom limb sensations. Understanding the mechanisms underlying such changes may lead to targeted therapies for neurological disorders, shifting the focus from merely treating symptoms to promoting structural brain repair.
❓ According to the passage, what is a key implication of neuroplasticity for medicine?
A. A) It proves that brain damage is always permanent.
B. B) It suggests that therapies could promote structural brain repair.
C. C) It eliminates the possibility of maladaptive changes.
D. D) It shows that plasticity is uniform across all ages.
✅ 正确答案
B) It suggests that therapies could promote structural brain repair.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first