Evidence map›Paper›PMID 18385328›Full record

Trial reportThe Journal of neuroscience : the official journal of the Society for Neuroscience2008

Dopamine depletion impairs frontostriatal functional connectivity during a set-shifting task.

Atsuko Nagano-Saito, Marco Leyton, Oury Monchi, Yael K Goldberg, Yong He, Alain Dagher

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 111 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
111citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

111 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  8. Dopamine Depletion Reduces Food-Related Reward Activity Independent of BMI.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2016
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  16. L-dopa modulates functional connectivity in striatal cognitive and motor networks: a double-blind placebo-controlled study.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
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51 more citing papers are in PubMed but not listed here.

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

6 authors.

Atsuko Nagano-SaitoMontreal Neurological Institute, Montréal, Quebec, Canada H3A 2B4.
Marco Leyton
Oury Monchi
Yael K Goldberg
Yong He
Alain Dagher

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated the effect of transient dopamine depletion on functional connectivity during performance of the Wisconsin Card Sorting Task. Functional magnetic resonance imaging data were analyzed as a psychophysiological interaction, a statistical method used to identify functional connectivity during experimental manipulations. Nineteen healthy subjects were scanned, double blind, on 2 separate days: once after drinking an amino acid mixture deficient in the dopamine precursors tyrosine and phenylalanine, and once after drinking a nutritionally balanced mixture. In the balanced drink session, statistically significant connectivity between the frontal lobes and striatum was observed during set shifting, and the greater the prefrontostriatal connectivity, the faster the response time after a shift. Neither of these associations were observed after dopamine depletion. Moreover, dopamine depletion also reduced the degree of deactivation in areas normally suppressed during attention-demanding tasks, including the medial prefrontal cortex, posterior cingulate cortex, and hippocampus. Together, these results suggest that functional connectivity between the frontal lobes and basal ganglia during set shifting contributes to more efficient performance and that dopamine modulates this corticostriatal connectivity.

Indexed as

Neuropsychological TestsAdultAmino AcidsAttentionBrain MappingCorpus StriatumDopamineDouble-Blind MethodFemaleFood, FormulatedFrontal LobeHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleNeural PathwaysAmino AcidsDopamineOxygen

Identifiers

PMID18385328
PMCPMC6671089

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.