Which term explains the brain's ability to maintain function by rerouting signals through alternate pathways after injury?

• A. Neural reserve
• B. Cognitive reserve
• C. Neural compensation
• D. Lifestyle reserve

Answer: (C)

Rerouting signals through alternate pathways after injury reflects the brain’s ability to adapt through neuroplasticity, creating neural compensation. When a region is damaged, other parts of the brain can take over the task by forming new connections or strengthening existing neighboring networks, helping maintain function. For example, after a stroke damaging language areas, nearby or opposite-hemisphere regions can be recruited to support speech and language, with recovery often aided by therapy. This dynamic reorganization is what neural compensation describes—the brain compensating for injury by using different pathways to accomplish the same functions.

Cognitive reserve, by contrast, refers to the brain’s resilience built up over life—through education, occupation, and engaging activities—that helps cope with pathology and may delay symptoms, rather than describing the real-time rerouting of signals after injury. The other terms are less standard descriptors of this specific process.