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Why does reaction time decline as we age? A look at the science of aging and neural pathways

According to a MindCrowd study, reaction time performance degrades by an average of 3 to 6 milliseconds per year after age 20. This age-related slowing is a normal biological process, but many wonder: **Why does reaction time decline as we age**? The answer lies in a complex interplay of changes within the brain and nervous system.