Evidence map›Paper›PMID 26955516›Full record

ArticleNeuroImage. Clinical2016

Alpha desynchronization and fronto-parietal connectivity during spatial working memory encoding deficits in ADHD: A simultaneous EEG-fMRI study.

Agatha Lenartowicz, Steven Lu, Cameron Rodriguez, Edward P Lau, Patricia D Walshaw, James T McCracken, Mark S Cohen, Sandra K Loo

Open access · goldAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

  1. Event-related brain oscillations in attention-deficit/hyperactivity disorder (ADHD): A systematic review and meta-analysis.International journal of psychophysiology : official journal of the International Organization of Psychophysiology · 2022
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  17. EEG Data Quality in Real-World Settings: Examining Neural Correlates of Attention in School-Aged Children.Mind, brain and education : the official journal of the International Mind, Brain, and Education Society · 2022
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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

8 authors at 1 institution in 1 country.

Agatha LenartowiczSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States; David Geffen School of Medicine, 760 Westwood Plaza, Los Angeles, CA 90024, United States. Electronic address: alenarto@g.ucla.edu.
Steven LuSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
Cameron RodriguezSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
Edward P LauSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
Patricia D WalshawSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States; David Geffen School of Medicine, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
James T McCrackenSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States; David Geffen School of Medicine, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
Mark S CohenSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States; David Geffen School of Medicine, 760 Westwood Plaza, Los Angeles, CA 90024, United States; California Nanosystems Institute, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
Sandra K LooSemel Institute for Neuroscience and Human Behavior, 760 Westwood Plaza, Los Angeles, CA 90024, United States; David Geffen School of Medicine, 760 Westwood Plaza, Los Angeles, CA 90024, United States.
California NanoSystems Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The underlying mechanisms of alpha band (8-12 Hz) neural oscillations are of importance to the functioning of attention control systems as well as to neuropsychiatric conditions that are characterized by deficits of that system, such as attention deficit hyperactivity disorder (ADHD). The objectives of the present study were to test if visual encoding-related alpha event-related desynchronization (ERD) correlates with fronto-parieto-occipital connectivity, and whether this is disrupted in ADHD during spatial working memory (SWM) performance. We acquired EEG concurrently with fMRI in thirty boys (12-16 yrs. old, 15 with ADHD), during SWM encoding. Psychophysiological connectivity analyses indicated that alpha ERD during SWM encoding was associated with both occipital activation and fronto-parieto-occipital functional connectivity, a finding that expands on prior associations between alpha ERD and occipital activation. This finding provides novel support for the interpretation of alpha ERD (and the associated changes in occipital activation) as a phenomenon that involves, and perhaps arises as a result of, top-down network interactions. Alpha ERD was associated less strongly with occipital activity, but associated more strongly with fronto-parieto-occipital connectivity in ADHD, consistent with a compensatory attentional response. Additionally, we illustrate that degradation of EEG data quality by MRI-amplified motion artifacts is robust to existing cleaning algorithms and is significantly correlated with hyperactivity symptoms and the ADHD Combined Type diagnosis. We conclude that persistent motion-related MR artifacts in EEG data can increase variance and introduce bias in interpretation of group differences in populations characterized by hypermobility--a clear limitation of current-state EEG-fMRI methodology.

Indexed as

Attention Deficit Disorder with HyperactivityElectroencephalographyMagnetic Resonance ImagingAdolescentAlpha RhythmAnalysis of VarianceCerebral CortexChildHumansImage Processing, Computer-AssistedMaleMemory, Short-TermNerve NetOxygenPsychiatric Status Rating ScalesSpatial LearningOxygenADHDAlphaEEG-fMRIEncodingFunctional connectivitySpatial working memory

Identifiers

PMID26955516
PMCPMC4761724
OpenAlexW2252835724

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.