The concept of neuroplasticity has revolutionized our understanding of the brain's capacity for change. Historically, scientists believed that the adult brain was largely fixed, with neural circuits becoming rigid after a critical period in childhood. However, recent research demonstrates that the brain remains malleable throughout life, capable of reorganizing its structure and function in response to experience, injury, or learning. This plasticity occurs at multiple levels, from synaptic strengthening between individual neurons to large-scale cortical remapping, where functions such as movement or sensation can shift to adjacent brain regions after damage. Such adaptability underpins cognitive rehabilitation strategies for stroke victims and informs educational practices that leverage the brain's inherent flexibility. Nevertheless, plasticity is not unlimited; it declines with age and is influenced by genetic and environmental factors, highlighting the delicate balance between stability and adaptability in neural systems.
❓ Según el pasaje, ¿cuál de las siguientes opciones resume mejor la idea principal?
A. A) El cerebro adulto está completamente fijo e incapaz de cambiar después de la infancia.
B. B) La neuroplasticidad permite que el cerebro se adapte a lo largo de la vida, pero esta capacidad tiene límites.
C. C) El daño cerebral siempre conduce a una pérdida permanente de función porque la plasticidad es rara.
D. D) La neuroplasticidad está determinada únicamente por factores genéticos y no puede ser influenciada por la experiencia.
✅ 正确答案
B) Neuroplasticity allows the brain to adapt throughout life, but this ability has limits.
IELTS Reading Tips
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