Results 41 to 50 of about 162,248 (302)

Stochastic colonization of hosts with a finite lifespan can drive individual host microbes out of equilibrium.

open access: yesPLoS Computational Biology, 2020
Macroorganisms are inhabited by microbial communities that often change through the lifespan of an individual. One of the factors contributing to this change is colonization from the environment.
Román Zapién-Campos   +2 more
doaj   +1 more source

On the emergence of the correlation between life expectancy and the variance in the age at death

open access: yesRoyal Society Open Science, 2022
Recent empirical studies have found various patterns in the correlations between lifespan inequality and life expectancy in modern human populations. However, it is unclear how general these regularities are. Here we establish three theorems that provide
Oscar E. Fernandez   +1 more
doaj   +1 more source

Regulation of lifespan by chemosensory and thermosensory systems: findings in invertebrates and their implications in mammalian aging

open access: yesFrontiers in Genetics, 2012
Many environmental factors that dynamically change in nature influence various aspects of animal physiology. Animals are equipped with sensory neuronal systems that help them properly sense and respond to environmental factors. Several studies have shown
Dae-Eun eJeong   +5 more
doaj   +1 more source

Neurodevelopmental origins of lifespan changes in brain and cognition [PDF]

open access: yesProceedings of the National Academy of Sciences, 2016
Significance Brain and cognition change with age, with early gains and later declines. Attempts have been made to identify age-specific mechanisms, focusing on when and how declines begin in adults. However, even though general cognitive ability declines with age, there is a high stability in individuals’ cognitive ability relative to their ...
Kristine B. Walhovd   +21 more
openaire   +5 more sources

Lifespan Changes in Global and Selective Stopping and Performance Adjustments [PDF]

open access: yesFrontiers in Psychology, 2011
This study examined stopping and performance adjustments in four age groups (M ages: 8, 12, 21, and 76 years). All participants performed on three tasks, a standard two-choice task and the same task in which stop-signal trials were inserted requiring either the suppression of the response activated by the choice stimulus (global stop task) or the ...
van de Laar, M.C.   +3 more
openaire   +5 more sources

A lifespan program of mouse synaptome architecture [PDF]

open access: yes, 2019
## This item has been replaced by the one which can be found at https://doi.org/10.7488/ds/2796 ## How synapses change molecularly during the lifespan and across all brain circuits is unknown.
Koniaris, Babis, Grant, Seth, Qiu, Zhen
core   +1 more source

Two aspects of longevity are associated with rates of loss of telomeres in birds

open access: yesEcology and Evolution, 2022
Telomeres, the terminal repetitive DNA sequences at the ends of linear chromosomes, have strong associations with longevity in some major taxa. Longevity has been linked to rate of decline in telomere length in birds and mammals, and absolute telomere ...
F. Stephen Dobson   +2 more
doaj   +1 more source

How have trends in lifespan variation changed since 1950? A comparative study of 17 Western European countries [PDF]

open access: yes, 2016
Lifespan variation adds to life expectancy by measuring the inequality surrounding age of death that a population faces. Countries that tackle premature mortality generally have decreasing lifespan variation but this is the first study to compare and ...
Seaman, Rosie   +3 more
core   +1 more source

Change and Continuity in Attitudes Toward Homosexuality Across the Lifespan [PDF]

open access: yes, 2023
This study examines differential stability in attitudes towards homosexuality using panel data representative of the American adult population. While attitudes towards homosexuality have shifted considerably on the aggregate-level over the past few ...
Ekstam, David, Ekstam, David,
core   +1 more source

A genomic lifespan program that reorganises the young adult brain is targeted in schizophrenia

open access: yeseLife, 2017
The genetic mechanisms regulating the brain and behaviour across the lifespan are poorly understood. We found that lifespan transcriptome trajectories describe a calendar of gene regulatory events in the brain of humans and mice.
Nathan G Skene   +2 more
doaj   +1 more source

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