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The nonlinear properties of spontaneous fluctuations in blood oxygen level-dependent (BOLD) signals remain unexplored. We test the hypothesis that complexity of BOLD activity is reduced with aging and is correlated with cognitive performance in the elderly. A total of 99 normal older and 56 younger male subjects were included. Cognitive function was assessed using Cognitive Abilities Screening Instrument...
Interleukin-1 beta (IL-1 beta), a proinflammatory cytokine, plays a significant role in age-related changes in long-term potentiation (a biological substrate for learning and/or memory) in the hippocampus of experimental animals. This study tests the hypothesis that a biallelic functional polymorphism in the promoter region (position-511) (rs16944) of the IL-1 beta gene is associated with cognitive...
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