Evidence map›Paper›PMID 34732523›Full record

Trial reportThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Dynamic Recovery: GABA Agonism Restores Neural Variability in Older, Poorer Performing Adults.

Poortata Lalwani, Douglas D Garrett, Thad A Polk

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 26 citations in OpenAlex.

  1. Decreased BOLD Signal Variability in Middle-Aged and Older Adults on the Autism Spectrum.Autism research : official journal of the International Society for Autism Research · 2026
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  11. Neurotransmitters in Prevention and Treatment of Alzheimer's Disease.International journal of molecular sciences · 2023
    Review
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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

3 authors at 2 institutions in 2 countries.

Poortata LalwaniDepartment of Psychology, University of Michigan, Ann Arbor, Michigan 48109-1043.
Douglas D GarrettMax Planck Institute for Human Development, 14195 Berlin, Germany.
Thad A PolkDepartment of Psychology, University of Michigan, Ann Arbor, Michigan 48109-1043 tpolk@umich.edu.
Max Planck Institute for Human Development · DEUniversity of Michigan–Ann Arbor · US

Funding

Investigating age-related neural dedifferentiation longitudinally and in Alzheimer’s pathologyR01AG050523 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI POLK, THAD A · 2016 to 2025
$5.7M
The scope, cause and consequences of age-related decline in neural distinctiveness and brain signal variability in healthy and pathological aging (Funded Extension)F99AG068517 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LALWANI, POORTATA SHIRISH · 2020 to 2021
$71k
NIA NIH HHS F99 AG068517NIA NIH HHS R01 AG050523
6 · The paper itself

Abstract

Aging is associated with cognitive impairment, but there are large individual differences in these declines. One neural measure that is lower in older adults and predicts these individual differences is moment-to-moment brain signal variability. Testing the assumption that GABA should heighten neural variability, we examined whether reduced brain signal variability in older, poorer performing adults could be boosted by increasing GABA pharmacologically. Brain signal variability was estimated using fMRI in 20 young and 24 older healthy human adults during placebo and GABA agonist sessions. As expected, older adults exhibited lower signal variability at placebo, and, crucially, GABA agonism boosted older adults' variability to the levels of young adults. Furthermore, poorer performing older adults experienced a greater increase in variability on drug, suggesting that those with more to gain benefit the most from GABA system potentiation. GABA may thus serve as a core neurochemical target in future work on aging- and cognition-related human brain dynamics.

Indexed as

AdolescentAdultAgedAged, 80 and overAgingBrainCognitionFemaleGABA ModulatorsHumansLorazepamMagnetic Resonance ImagingMaleYoung AdultGABA ModulatorsLorazepamagingbrain signal variabilitylorazepampharmacological interventionresting-state fMRISDBOLD

Identifiers

PMID34732523
PMCPMC8580141
OpenAlexW3209718809

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.