What is the significance of synaptic plasticity in aging?

• A. It accelerates neuron loss.
• B. It helps maintain cognition despite decline.
• C. No role in aging.
• D. Only occurs in development.

Answer: (B)

Synaptic plasticity is the brain’s ability to adjust the strength of synaptic connections based on activity, experience, and learning. In aging, the system isn’t frozen; plasticity can wane but often persists enough to allow the network to reorganize and recruit alternative pathways. This remodeling helps reinforce the functioning circuits that support memory and executive processes, providing a basis for cognitive resilience even as other age-related changes accumulate. When plasticity remains or is enhanced, older brains can maintain higher levels of cognition by adapting connections rather than simply losing capacity. It isn’t accurate to say plasticity has no role in aging, nor that it’s limited to development, and it does not inherently speed up neuron loss.