雅思阅读

📖 Reading Passage

The concept of 'neuroplasticity' has revolutionized our understanding of the human brain. Historically, it was believed that the adult brain was structurally fixed after a critical period in childhood. However, recent research demonstrates that the brain retains the remarkable ability to reorganize its neural pathways throughout life. This adaptability occurs in response to learning, experience, or even injury. For instance, when one sensory modality is lost, such as vision, the corresponding cortical areas may be recruited to process input from other senses, like touch or hearing. This phenomenon underscores the brain's dynamic nature, yet it is not without limits. Neuroplastic changes require substantial effort and repetition, and the extent of reorganization diminishes with age. Consequently, while the brain is far more malleable than once assumed, its plasticity is constrained by biological and temporal factors.