雅思阅读

📖 Reading Passage

The concept of 'neuroplasticity' has revolutionized our understanding of the human brain. Traditionally, it was believed that the brain's structure was relatively fixed after childhood, with certain functions hardwired to specific regions. However, recent research demonstrates that the brain remains highly adaptable throughout life, capable of reorganizing its neural pathways in response to learning, experience, or injury. This plasticity is not uniform; it varies by brain region and age, with the hippocampus, crucial for memory, showing remarkable resilience even in older adults. Moreover, environmental enrichment and cognitive training have been shown to enhance synaptic growth, suggesting that mental activity can physically alter brain structure. This challenges the deterministic view of brain development and opens new avenues for rehabilitation after neurological damage, yet it also raises questions about the limits of such adaptability and the potential for maladaptive changes, such as chronic pain or addiction.