Evidence map›Paper›PMID 25326051›Full record

ArticlePsychopharmacology2015

Acute serotonin depletion releases motivated inhibition of response vigour.

Hanneke E M den Ouden, Jennifer C Swart, Kristin Schmidt, Durk Fekkes, Dirk E M Geurts, Roshan Cools

Abstract readControlled Clinical Trial
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–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

6 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Article
  4. Aversive motivation and cognitive control.Neuroscience and biobehavioral reviews · 2022
    Review
  5. Article
  6. Article
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.

Hanneke E M den OudenDonders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, Netherlands, h.denouden@donders.ru.nl.
Jennifer C Swart
Kristin Schmidt
Durk Fekkes
Dirk E M Geurts
Roshan Cools

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleThe neurotransmitter serotonin has long been implicated in the motivational control of behaviour. Recent theories propose that the role of serotonin can be understood in terms of an interaction between a motivational and a behavioural activation axis. Experimental support for these ideas, however, has been mixed.

objectivesIn the current study, we aimed to investigate the role of serotonin (5HT) in behavioural vigour as a function of incentive motivation.

methodsWe employed dietary acute tryptophan depletion (ATD) to lower the 5HT precursor tryptophan during the performance of a speeded visual discrimination task. Feedback valence and feedback probability were manipulated independently and cued prior to target onset. On feedback trials, fast correct responses led to either reward or avoidance of punishment, while slow or incorrect responses led to reward omission or punishment.

resultsWe show that behavioural responding is inhibited under high incentive motivation (i.e. high-feedback probability) at baseline 5HT levels and that lowering these leads to behavioural disinhibition, while leaving accuracy unaffected. Surprisingly, there were no differential effects of motivational valence, with 5HT depletion releasing behavioural inhibition under both appetitive and aversive motivation.

conclusionsOur findings extend current theories on the role of 5HT in behavioural inhibition by showing that reductions in serotonin lead to increased behavioural vigour only if there is a motivational drive to inhibit behaviour at baseline.

Indexed as

Inhibition, PsychologicalAdolescentAdultCross-Over StudiesDouble-Blind MethodFemaleHumansMaleMotivationPhotic StimulationReaction TimeSerotoninTryptophanYoung AdultSerotoninTryptophan

Identifiers

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Registered trials

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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.