The concept of 'neuroplasticity' has revolutionized our understanding of the human brain. Historically, scientists believed that the adult brain was largely fixed, with neural circuits becoming immutable after a critical period in childhood. However, recent research demonstrates that the brain retains a remarkable capacity for reorganization throughout life. This adaptability is driven by synaptic strengthening and the formation of new neural pathways in response to learning, experience, or even injury. For instance, individuals who lose their sight often exhibit enhanced tactile or auditory processing, as cortical areas normally devoted to vision are recruited for other senses. While neuroplasticity offers hope for rehabilitation after stroke or trauma, its limits remain a subject of debate. Over-stimulation or maladaptive plasticity can lead to chronic pain or phantom limb sensations, suggesting that the brain's flexibility is a double-edged sword.
❓ Según el pasaje, ¿cuál es una posible desventaja de la neuroplasticidad?
A. A. Solo ocurre durante la infancia.
B. B. Puede resultar en resultados negativos como dolor crónico.
C. C. Impide la recuperación después de una lesión cerebral.
D. D. Reduce la capacidad del cerebro para formar nuevas vías.
✅ 正确答案
B. It can result in negative outcomes like chronic pain.
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