雅思阅读

📖 Reading Passage

Recent advances in cognitive neuroscience have revealed that the human brain's capacity for neuroplasticity extends well into adulthood, challenging the long-held assumption that neural development ceases after adolescence. Studies involving functional magnetic resonance imaging (fMRI) demonstrate that adults who engage in sustained learning activities, such as acquiring a new language or mastering a musical instrument, exhibit increased grey matter density in regions associated with memory and executive function. Furthermore, these structural changes are accompanied by enhanced synaptic efficiency, which facilitates faster information processing. However, researchers caution that plasticity is not unlimited; the degree of adaptation depends on factors such as the intensity of training, genetic predispositions, and the individual's baseline cognitive health. This suggests that while adult brains remain malleable, targeted interventions must be carefully designed to optimize outcomes, particularly in educational and rehabilitative contexts.