The concept of neuroplasticity has revolutionized our understanding of the human brain. Traditionally, scientists believed that the brain's structure was fixed after a critical period in childhood. However, recent research demonstrates that the brain remains malleable throughout life, constantly reorganizing its neural pathways in response to experience. This adaptability is particularly evident in individuals who have suffered brain injuries; healthy regions can assume functions previously performed by damaged areas. Moreover, neuroplasticity underlies learning and memory, as synaptic connections are strengthened or pruned based on activity. While this capacity offers hope for rehabilitation, it also implies that negative experiences, such as chronic stress, can reshape the brain in detrimental ways, leading to anxiety or depression. Thus, neuroplasticity is a double-edged sword, highlighting the profound impact of environment and behavior on neural architecture.
❓ Según el pasaje, ¿cuál de las siguientes afirmaciones refleja mejor la idea principal?
A. La estructura del cerebro es fija después de la infancia y no puede cambiar.
B. B) La neuroplasticidad permite que el cerebro se adapte positivamente, pero también puede dar lugar a cambios negativos.
C. C) Las lesiones cerebrales siempre se reparan por completo mediante la neuroplasticidad.
D. D) El estrés crónico no tiene ningún efecto sobre las vías neuronales del cerebro.
✅ 正确答案
B) Neuroplasticity allows the brain to adapt positively but can also lead to negative changes.
IELTS Reading Tips
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