雅思阅读

📖 Reading Passage

The concept of 'neuroplasticity' has revolutionized our understanding of the brain's capacity for change. Historically, scientists believed that the adult brain was a fixed, immutable organ, with neural circuits becoming rigid after a critical period in childhood. However, recent research demonstrates that the brain remains highly adaptable throughout life, constantly reorganizing its structure and function in response to experience, learning, and even injury. This plasticity is mediated by mechanisms such as synaptic strengthening, the formation of new neural connections, and, in certain regions like the hippocampus, the generation of new neurons. While this adaptability offers remarkable potential for recovery after stroke or traumatic brain injury, it also implies that maladaptive patterns, such as chronic pain or addiction, can become deeply entrenched. Consequently, therapeutic interventions increasingly aim to harness neuroplasticity, using targeted training or behavioral therapies to encourage beneficial reorganization while discouraging harmful neural pathways.