Anatomy & Physiology: Current Research
Open Access
ISSN: 2161-0940
ISSN: 2161-0940
Claire Dubois*
Cognitive aging is a complex biological process characterized by gradual changes in memory, attention, processing speed and executive function that occur throughout the lifespan. As global life expectancy continues to increase, understanding the neurophysiological mechanisms underlying cognitive aging has become a major focus of neuroscience, gerontology and precision medicine. Although aging is often associated with cognitive decline, recent research has demonstrated that the aging brain retains considerable adaptability through neuroplasticity, compensatory mechanisms and environmental influences. The anatomical foundation of cognitive aging involves progressive changes in brain structure and connectivity. Aging is associated with reductions in gray matter volume, alterations in white matter integrity and changes in regional brain organization. The prefrontal cortex and hippocampus are particularly vulnerable to age related modifications because of their essential roles in executive function, working memory, learning and spatial navigation. Declines in synaptic density, dendritic complexity and neuronal communication efficiency contribute to slower information processing and reduced cognitive flexibility. However, these structural changes are highly variable among individuals, suggesting that biological aging and cognitive aging do not always occur at the same rate.
Published Date: 2025-10-01; Received Date: 2025-09-01