For example, the people with older brains had weaker grip strength meaning they could not grasp an object as tightly , lower lung capacity and slower walking speeds than the people with younger brains, the researchers found. These three factors have been linked to unhealthy aging. In addition, people with older brains were more likely to die before age 80, the researchers found.
Specifically, men in the study who died before age 80 had brains that were 8 years older, on average, than their actual ages, and women who died before age 80 had brains that were 2 years older, on average, than their actual ages. Each extra year of brain age was linked to a 6 percent increase in risk of dying before age 80, according to the study. In other words, a year-old with a year-old brain had a 6 percent greater risk of death before 80 than a year-old with a year-old brain; if the brain was 2 years older, the risk of death would be 12 percent higher.
Apparent thinning of human visual cortex during childhood is associated with myelination
The study had several limitations, however. Simon Glover, Press Officer s.
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The Conversation Browser does not support script. Within the anterior default mode network, ventral attention network, and sensorimotor network, functional connectivity was significantly lower with older age. In contrast, functional connectivity was higher with older age within the visual network.
Brain - Wikipedia
Between resting state networks, we found patterns of both increases and decreases in connectivity in approximate equal proportions. Our results reinforce the notion that the aging brain undergoes a reorganization process, and serves as a solid basis for exploring functional connectivity as a preclinical marker of neurodegenerative disease.