Evidence map›Paper›PMID 21640782›Full record

Trial reportProgress in neuro-psychopharmacology & biological psychiatry2011

Zolpidem reduces the blood oxygen level-dependent signal during visual system stimulation.

Stephanie C Licata, Steven B Lowen, George H Trksak, Robert R Maclean, Scott E Lukas

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Progress in neuro-psychopharmacology & biological psychiatry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

9 citing papers in PubMed, 21 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Stephanie C LicataBehavioral Psychopharmacology Research Laboratory, McLean Hospital/Harvard Medical School, 115 Mill Street, Belmont MA 02478, USA. slicata@mclean.harvard.edu
Steven B Lowen
George H Trksak
Robert R Maclean
Scott E Lukas
Harvard University · USMcLean Hospital · US

Funding

fMRI Studies Investigating the Choice Effects of Sedative/HypnoticsK01DA023659 · NIDA · MCLEAN HOSPITAL · PI LICATA, STEPHANIE C · 2007 to 2010
$601k
NIDA NIH HHS K01 DA023659
6 · The paper itself

Abstract

Zolpidem is a short-acting imidazopyridine hypnotic that binds at the benzodiazepine binding site on specific GABA(A) receptors to enhance fast inhibitory neurotransmission. The behavioral and receptor pharmacology of zolpidem has been studied extensively, but little is known about its neuronal substrates in vivo. In the present within-subject, double-blind, and placebo-controlled study, blood oxygen level-dependent functional magnetic resonance imaging (BOLD fMRI) at 3 Tesla was used to assess the effects of zolpidem within the brain. Healthy participants (n=12) were scanned 60 min after acute oral administration of zolpidem (0, 5, 10, or 20mg), and changes in BOLD signal were measured in the visual cortex during presentation of a flashing checkerboard. Heart rate and oxygen saturation were monitored continuously throughout the session. Zolpidem (10 and 20mg) reduced the robust visual system activation produced by presentation of this stimulus, but had no effects on physiological activity during the fMRI scan. Zolpidem's modulation of the BOLD signal within the visual cortex is consistent with the abundant distribution of GABA(A) receptors localized in this region, as well as previous studies showing a relationship between increased GABA-mediated neuronal inhibition and a reduction in BOLD activation.

Indexed as

Photic StimulationAdultDose-Response Relationship, DrugDouble-Blind MethodFemaleHeart RateHumansHypnotics and SedativesMagnetic Resonance ImagingMaleOxygenPlacebosPyridinesReceptors, GABA-AVisual CortexYoung AdultHypnotics and SedativesOxygenPlacebosPyridinesReceptors, GABA-AZolpidem

Identifiers

PMID21640782
PMCPMC3154455
OpenAlexW2028944061

What OpenQuestion holds

Textmetadata
LicenceTDM
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.