雅思阅读

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The concept of neuroplasticity, once considered a fixed attribute of the developing brain, has revolutionized our understanding of adult cognition. Recent studies demonstrate that synaptic connections can be strengthened or pruned in response to environmental stimuli, learning, and even injury. This adaptability, however, is not uniform across all brain regions; the hippocampus, crucial for memory formation, shows remarkable plasticity, whereas the primary visual cortex retains less flexibility after the critical period. Such findings have profound implications for rehabilitation after stroke and for treating neurodegenerative diseases. Yet, researchers caution that neuroplasticity is not synonymous with unlimited recovery; the brain's capacity for change is constrained by genetic factors and the nature of the acquired damage. Consequently, therapeutic interventions must be tailored to individual neural architectures, timing, and the specific cognitive demands of the patient.