Evidence map›Paper›PMID 24008589›Full record

ReviewBrain imaging and behavior2014

Understanding variability in the BOLD signal and why it matters for aging.

Cheryl L Grady, Douglas D Garrett

Abstract readReview
In one paragraph

Review in Brain imaging and behavior, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

106 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Functional Magnetic Resonance Imaging Signal Variability Is Associated With Neuromodulation in Fibromyalgia.Neuromodulation : journal of the International Neuromodulation Society · 2023
    Trial
  3. Dynamic Recovery: GABA Agonism Restores Neural Variability in Older, Poorer Performing Adults.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Trial
  4. Trial
  5. Amphetamine modulates brain signal variability and working memory in younger and older adults.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Trial
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Distributed fMRI Patterns Coupled to Low-Frequency Cardiorespiratory Dynamics Provide Markers of Aging.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Variation in high-amplitude events across the human lifespan.Network neuroscience (Cambridge, Mass.) · 2026
    Article
  17. Article
  18. Article
  19. Article
  20. Aging and the Spectral Properties of Brain Hemodynamics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article

46 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Cheryl L GradyRotman Research Institute at Baycrest, 3560 Bathurst Street, Toronto, ON, M6A2E1, Canada, cgrady@research.baycrest.org.
Douglas D Garrett

Funding

CIHR 14036-4CIHR MOP14036
6 · The paper itself

Abstract

Recent work in neuroscience supports the idea that variability in brain function is necessary for optimal brain responsivity to a changing environment. In this review, we discuss a series of functional magnetic resonance imaging (fMRI) studies in younger and older adults to assess age-related differences in variability of the fMRI signal. This work shows that moment-to-moment brain signal variability represents an important "signal" within what is typically considered measurement-related "noise" in fMRI. This accumulation of evidence suggests that moving beyond the mean will provide a complementary window into aging-related neural processes.

Indexed as

AgingBrainCerebrovascular CirculationCognitionHumansMagnetic Resonance ImagingOxygenOxygen

Identifiers

PMID24008589
PMCPMC3922711

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.