雅思阅读

📖 Reading Passage

The concept of 'neuroplasticity' has revolutionized our understanding of the human brain. Traditionally, it was believed that the adult brain was largely fixed in its structure and function after a critical period in childhood. However, recent research has demonstrated that the brain retains the remarkable ability to reorganize itself by forming new neural connections throughout life. This adaptability is not merely a passive response to injury but is actively driven by learning and experience. For instance, studies on London taxi drivers have shown that their posterior hippocampus, a region associated with navigation, is significantly larger than that of control subjects, suggesting that extensive spatial memory training can physically alter brain structure. This finding has profound implications for education and rehabilitation, implying that targeted mental exercises could potentially mitigate cognitive decline in aging populations or aid recovery after stroke. Nevertheless, scientists caution that neuroplasticity has limits; it is not a panacea, and the brain's capacity for change diminishes with age, though it never entirely ceases.