雅思阅读

📖 Reading Passage

The concept of neuroplasticity has revolutionized our understanding of the human brain. Traditionally, scientists believed that the brain's structure was fixed after childhood, with no capacity for significant change in adulthood. However, recent research demonstrates that the brain remains highly adaptable throughout life, constantly reorganizing its neural pathways in response to learning, experience, and even injury. This plasticity is most pronounced in the hippocampus, a region critical for memory formation, and the cerebral cortex, which governs higher-order functions such as decision-making and sensory processing. For instance, studies on London taxi drivers revealed that their posterior hippocampus was significantly larger than average, correlating with their extensive navigation experience. Such findings suggest that targeted mental training could potentially mitigate cognitive decline in aging populations, though the extent of this protective effect remains under investigation.