雅思阅读

📖 Reading Passage

The concept of 'neuroplasticity' has revolutionized our understanding of the human brain. Previously, it was believed that the adult brain was largely fixed in its structure and function after a critical period in childhood. However, recent research demonstrates that the brain retains a remarkable capacity for reorganization throughout life. This plasticity is not merely a passive response to injury but is actively involved in learning, memory formation, and adaptation to new environments. For instance, studies on London taxi drivers have shown that the hippocampus, a region associated with spatial navigation, exhibits increased gray matter volume correlated with years of driving experience. This suggests that intensive cognitive activity can physically alter brain structure. Nevertheless, the extent of plasticity has limits, and it can be diminished by factors such as aging, chronic stress, or neurological disease. Understanding these constraints is crucial for developing effective rehabilitation strategies after brain damage.