雅思阅读

📖 Reading Passage

The concept of neuroplasticity has revolutionized our understanding of the human brain. Historically, it was believed that the brain's structure was fixed after a critical period in childhood. However, recent research demonstrates that the brain remains capable of reorganizing itself throughout life, adapting to new experiences, learning, and even injury. This plasticity occurs at multiple levels, from synaptic connections between neurons to entire cortical maps. For instance, in individuals who lose their sight, the visual cortex may be recruited to process touch or sound, enhancing their remaining senses. Such findings have significant implications for rehabilitation after stroke or traumatic brain injury, suggesting that targeted therapies can promote functional recovery by harnessing the brain's inherent adaptability. Nevertheless, plasticity is not unlimited; its extent depends on factors such as age, the nature of the stimulus, and the duration of training.