Based on findings of consistent age-related differences in activation patterns and functional network topology across memory encoding and recognition tasks, Grady et al. and Wang et al. argued that age-related changes in brain network organization derive from a common, domain-general factor [26], [39].
Construction of consistent age-associated signatures has proven to be challenging as a multitude of gene expression studies have identified age-associated genes so far, though with limited mutual overlap (Passtoors et al., 2008; de Magalhaes et al., 2009).
Because of its genetic underpinnings and consistent age of onset within families, autosomal dominant Alzheimer's disease (ADAD) provides a unique opportunity to conduct clinical trials of investigational agents as preventative or symptom-delaying treatments.
Analyses of age at first vaginal sex suggest that 80-90% of respondents report a consistent age, with repeated measures crossing months 13 14 or even years.
The remarkably consistent age of the present tor population could be associated with a stripping event at the start of the Devensian, but fuller analysis must await closer controls on tor denudation rates in different climatic phases, and on ice cover extent and duration.
The lack of any consistent age-related trend in elimination half-lives in the present study is at odds with the findings from Flesch-Janys et al. (1996), in which elimination rates for each dioxin congener except OCDD were significantly and inversely related to the logarithm of age.
The lack of clear and consistent age-related patterns in treatment response may be due to a range of factors.
Radiocarbon dating failed in providing consistent ages of the ridges in contrast to optically stimulated luminescence (OSL), which yielded coherent and robust dates.
Zircon U Pb dating provides consistent ages of 751 ± 7 Ma for protolith crystallization, and two group ages of 213 ± 4 to 245 ± 17 Ma and 126 ± 4 to 131 ± 36 Ma for regional metamorphism.
Apatite U-Pb dating on six samples yield consistent ages of ~ 1075 1025 Ma, suggesting a thermal reset coinciding with mantle-derived magmatism of the greater Warakurna Large Igneous Province (~ 1080 1040 Ma).
23 For each risk factor-disease pair, we used the same RR for men and women and consistent age-patterns of RRs.
