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A Quantitative Study of Network Robustness in Resting-State fMRI in Young and Elder Adults

Overview of attention for article published in Frontiers in Aging Neuroscience, February 2016
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Title
A Quantitative Study of Network Robustness in Resting-State fMRI in Young and Elder Adults
Published in
Frontiers in Aging Neuroscience, February 2016
DOI 10.3389/fnagi.2015.00256
Pubmed ID
Authors

Jaime Gomez-Ramirez, Yujie Li, Qiong Wu, Jinglong Wu

Abstract

Brain connectivity analysis has shown great promise in understanding how aging affects functional connectivity; however, an explanatory framework to study healthy aging in terms of network efficiency is still missing. Here, we study network robustness, i.e., resilience to perturbations, in resting-state functional connectivity networks (rs-fMRI) in young and elder subjects. We apply analytic measures of network communication efficiency in the human brain to investigate the compensatory mechanisms elicited in aging. Specifically, we quantify the effect of "lesioning" (node canceling) of either single regions of interest (ROI) or whole networks on global connectivity metrics (i.e., efficiency). We find that young individuals are more resilient than old ones to random "lesioning" of brain areas; global network efficiency is over 3 times lower in older subjects relative to younger subjects. On the other hand, the "lesioning" of central and limbic structures in young subjects yield a larger efficiency loss than in older individuals. Overall, our study shows a more idiosyncratic response to specific brain network "lesioning" in elder compared to young subjects, and that young adults are more resilient to random deletion of single nodes compared to old adults.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 52 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 2%
Unknown 51 98%

Demographic breakdown

Readers by professional status Count As %
Researcher 11 21%
Student > Ph. D. Student 8 15%
Professor 4 8%
Student > Doctoral Student 4 8%
Student > Master 3 6%
Other 8 15%
Unknown 14 27%
Readers by discipline Count As %
Neuroscience 12 23%
Psychology 11 21%
Medicine and Dentistry 7 13%
Agricultural and Biological Sciences 1 2%
Sports and Recreations 1 2%
Other 3 6%
Unknown 17 33%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 February 2016.
All research outputs
#14,834,028
of 22,842,950 outputs
Outputs from Frontiers in Aging Neuroscience
#3,366
of 4,791 outputs
Outputs of similar age
#221,455
of 397,089 outputs
Outputs of similar age from Frontiers in Aging Neuroscience
#47
of 74 outputs
Altmetric has tracked 22,842,950 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,791 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 13.0. This one is in the 25th percentile – i.e., 25% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 397,089 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 41st percentile – i.e., 41% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 74 others from the same source and published within six weeks on either side of this one. This one is in the 33rd percentile – i.e., 33% of its contemporaries scored the same or lower than it.