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 a remarkable ability to reorganize itself throughout life, forming new neural connections in response to learning, experience, or injury. This adaptability is not uniform across all brain regions; it is particularly pronounced in areas such as the hippocampus, which is crucial for memory formation. Studies on London taxi drivers, for instance, revealed an increased volume of grey matter in the posterior hippocampus, correlating with their extensive navigational experience. Such findings suggest that the brain's plasticity is use-dependent, meaning that specific cognitive activities can shape its physical structure. This has profound implications for rehabilitation after brain damage, as therapies can be designed to harness this plasticity to promote recovery, challenging the old dogma of an immutable adult brain.