The concept of neuroplasticity has revolutionized our understanding of the human brain. Traditionally, scientists believed that the brain's structure was fixed after a critical period in childhood. However, recent research demonstrates that the brain remains malleable throughout life, capable of reorganizing neural pathways in response to learning, experience, or injury. This adaptability is not uniform; it varies by brain region and is influenced by factors such as age, genetics, and environmental enrichment. For instance, individuals who suffer a stroke may regain lost functions through targeted rehabilitation, as adjacent brain areas assume new roles. Moreover, neuroplasticity underlies cognitive training and has implications for treating conditions like depression and anxiety, where maladaptive neural circuits can be reshaped. Yet, experts caution that plasticity has limits; not all functions can be fully restored, and excessive plasticity might lead to pathological changes, such as chronic pain or phantom limb sensations. Thus, while neuroplasticity offers remarkable potential, it is a double-edged sword requiring careful therapeutic application.
❓ According to the passage, what is a key limitation of neuroplasticity mentioned by experts?
A. A. It only occurs during childhood, making adult rehabilitation impossible.
B. B. It is completely uniform across all brain regions and individuals.
C. C. It cannot fully restore all functions and may contribute to abnormal conditions.
D. D. It is solely determined by genetics, leaving no room for environmental influence.
✅ 正确答案
C. It cannot fully restore all functions and may contribute to abnormal conditions.
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