cognitive aging

Syllable breakdown

Dictionary meaning

the study of how cognitive functions — including memory, processing speed, attention, executive function, language, and reasoning — change across the adult lifespan as a normal consequence of biological aging, distinct from the pathological cognitive decline associated with Alzheimer's disease and other dementias; cognitive aging research has established that different cognitive abilities follow different trajectories — fluid intelligence, including processing speed and working memory capacity, begins declining in early adulthood, while crystallised intelligence, including vocabulary and accumulated knowledge, can continue to improve well into old age; the concept of cognitive reserve — the brain's resilience to age-related or pathological change, associated with education, intellectual engagement, and social activity — has become central to both research and public health messaging about maintaining cognitive vitality in aging; neuroimaging studies have revealed that older adults often recruit different or more distributed brain networks to accomplish cognitive tasks, suggesting functional reorganisation as a compensatory response to structural age-related changes