Evidence map›Paper›PMID 29668865›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2019

Association Between Brain Activation and Functional Connectivity.

Dardo Tomasi, Nora D Volkow

Open access · hybridAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
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

33 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
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  5. Review
  6. Article
  7. Tensor dictionary-based heterogeneous transfer learning to study emotion-related gender differences in brain.Neural networks : the official journal of the International Neural Network Society · 2025
    Article
  8. Article
  9. Article
  10. Review
  11. Examining the role of dopamine in methylphenidate's effects on resting brain function.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  12. Article
  13. Article
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  15. Article
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  19. Article
  20. Nutritional Ketosis in Parkinson's Disease - a Review of Remaining Questions and Insights.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Review
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 at 1 institution in 1 country.

Dardo TomasiNational Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA.
Nora D VolkowNational Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA.
National Institute on Alcohol Abuse and Alcoholism · US

Funding

Neurobiology of Substance Abuse and AddictionZIAAA000550 · NIAAA · NATIONAL INSTITUTE ON ALCOHOL ABUSE AND ALCOHOLISM · PI VOLKOW, NORA D. · 2009 to 2025
$115.1M
6 · The paper itself

Abstract

The origin of the "resting-state" brain activity recorded with functional magnetic resonance imaging (fMRI) is still uncertain. Here we provide evidence for the neurovascular origins of the amplitude of the low-frequency fluctuations (ALFF) and the local functional connectivity density (lFCD) by comparing them with task-induced blood-oxygen level dependent (BOLD) responses, which are considered a proxy for neuronal activation. Using fMRI data for 2 different tasks (Relational and Social) collected by the Human Connectome Project in 426 healthy adults, we show that ALFF and lFCD have linear associations with the BOLD response. This association was significantly attenuated by a novel task signal regression (TSR) procedure, indicating that task performance enhances lFCD and ALFF in activated regions. We also show that lFCD predicts BOLD activation patterns, as was recently shown for other functional connectivity metrics, which corroborates that resting functional connectivity architecture impacts brain activation responses. Thus, our findings indicate a common source for BOLD responses, ALFF and lFCD, which is consistent with the neurovascular origin of local hemodynamic synchrony presumably reflecting coordinated fluctuations in neuronal activity. This study also supports the development of task-evoked functional connectivity density mapping.

Indexed as

Brain MappingMagnetic Resonance ImagingNeurovascular CouplingAdultBrainCognitionFemaleHumansMaleNeural PathwaysPattern Recognition, VisualSignal Processing, Computer-AssistedSocial BehaviorALFFBOLDHCPlFCDneurovascular

Identifiers

PMID29668865
PMCPMC6642453
OpenAlexW2798089108

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.