Evidence map›Paper›PMID 27492789›Full record

Trial reportPsychopharmacology2016

The effects of methylphenidate and propranolol on the interplay between induced-anxiety and working memory.

Monique Ernst, Tiffany Lago, Andrew Davis, Christian Grillon

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Psychopharmacology, 2016. 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
1.0field-weighted citation impact, top 24% 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, 24 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

4 authors at 1 institution in 1 country.

Monique ErnstNeurobiology of Fear and Anxiety, National Institute of Mental Health, 15K North Drive, Bldg 15K, MSC 2670, Bethesda, MD, 20892-2670, USA. ernstm@mail.nih.gov.
Tiffany LagoNeurobiology of Fear and Anxiety, National Institute of Mental Health, 15K North Drive, Bldg 15K, MSC 2670, Bethesda, MD, 20892-2670, USA.
Andrew DavisNeurobiology of Fear and Anxiety, National Institute of Mental Health, 15K North Drive, Bldg 15K, MSC 2670, Bethesda, MD, 20892-2670, USA.
Christian GrillonNeurobiology of Fear and Anxiety, National Institute of Mental Health, 15K North Drive, Bldg 15K, MSC 2670, Bethesda, MD, 20892-2670, USA.
National Institute of Mental Health · US

Funding

The Psychophysiology Of Fear And AnxietyZIAMH002798 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI GRILLON, CHRISTIAN · 2009 to 2022
$29.0M
The Psychophysiology Of Fear And AnxietyZ01MH002798 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI GRILLON, CHRISTIAN · 2002 to 2008
$3.8M
Intramural NIH HHS Z01 MH002798Intramural NIH HHS ZIA MH002798NULL Z01 MH002798-07
6 · The paper itself

Abstract

rationaleResearch documents a reciprocal impact of anxiety on working memory (WM), although its strength and direction depend on factors like task difficulty. A better understanding of these factors may generate insights into cognitive mechanisms of action involved in anxiety, culminating into treatment implications. By blocking the physiological effects of anxiety, propranolol might also block anxiety interference on WM. Conversely, by improving task-directed attention, methylphenidate might reduce anxiety, or, alternatively, by improving cognitive efficiency and free up processing resources to compute anxiety.

objectivesTo investigate the interplay between induced anxiety and WM, we pharmacologically manipulated either anxiety or cognition, using single doses of 40 mg propranolol (PRO), 20 mg methylphenidate (MPH), or placebo (PLA). In this double-blind parallel-group design study, 60 healthy volunteers (20/drug group) performed a verbal WM task under three loads, 1-, 2- and 3-back, and in two conditions, threat of shock and safety. Startle electromyography (EMG) was used to measure anxiety.

resultsFindings were twofold: (1) MPH blocked anxiety interference only on the 3-back WM performance, while PRO or PLA had no effects on anxiety-WM interference, and (2) drugs had no effects on anxiety, but, after controlling for baseline anxiety, MPH enhanced anxiety-potentiated startle during the 3-back task.

conclusionsThese findings support that MPH-related improvement of cognitive efficiency permits anxiety to be processed and expressed. In conclusion, MPH may be a useful tool to investigate the mechanisms of interaction between anxiety and WM, particularly those under catecholaminergic control.

Indexed as

AnxietyAdrenergic beta-AntagonistsAdultAttentionCentral Nervous System StimulantsDouble-Blind MethodFemaleHealthy VolunteersHumansMaleMemory, Short-TermMethylphenidatePropranololYoung AdultAdrenergic beta-AntagonistsCentral Nervous System StimulantsMethylphenidatePropranololCatecholamineCognitionDopamineFear-potentiated startleLimited resources theoryStimulant

Identifiers

PMID27492789
PMCPMC5131568
OpenAlexW2497408329

What OpenQuestion holds

Textmetadata
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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.