Evidence map›Paper›PMID 16710715›Full record

Trial reportPsychopharmacology2006

The effect of acute tryptophan depletion on the BOLD response during performance monitoring and response inhibition in healthy male volunteers.

Elisabeth A T Evers, Frederik M van der Veen, Jeroen A van Deursen, Jeroen A J Schmitt, Nicolaas E P Deutz, Jelle Jolles

Open access · greenAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Psychopharmacology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 80 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
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  5. Serotonin 2A receptors, citalopram and tryptophan-depletion: a multimodal imaging study of their interactions during response inhibition.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2013
    Trial
  6. Trial
  7. Neurochemical enhancement of conscious error awareness.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012
    Trial
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  9. Trial
  10. Article
  11. Neuromodulation of prefrontal cortex cognitive function in primates: the powerful roles of monoamines and acetylcholine.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Review
  12. The Role of Tryptophan and Tyrosine in Executive Function and Reward Processing.International journal of tryptophan research : IJTR · 2020
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
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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

6 authors at 3 institutions in 2 countries.

Elisabeth A T EversDepartment of Psychiatry and Neuropsychology (DRT 10), Brain and Behavior Institute, Maastricht University, P.O. Box 616, 6200 MD Maastricht, Netherlands. l.evers@np.unimaas.nl
Frederik M van der Veen
Jeroen A van Deursen
Jeroen A J Schmitt
Nicolaas E P Deutz
Jelle Jolles
Maastricht University · NLErasmus University Rotterdam · NLNestlé (Switzerland) · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleSerotonin (5-HT) was implicated in both clinical and experimental studies in flexible, goal-directed behavior. However, the way in which 5-HT manipulations affect brain activation patterns underlying different subprocesses of cognitive flexibility remains largely unknown.

objectivesThe aim of this study was to investigate the effect of a transient lowering of 5-HT on brain activation during performance monitoring and response inhibition. MATERIALS AND

methodsWe used acute tryptophan depletion (ATD), a well-known method to reduce central 5-HT, to investigate the effect of a transient lowering of 5-HT on the blood-oxygen-level dependent (BOLD) response in an event-related functional MRI study. Thirteen healthy male volunteers performed a modified Go/NoGo task in a counterbalanced, placebo-controlled, within-subject design.

resultsATD significantly lowered plasma tryptophan but did not affect mood and cognitive performance. ATD decreased the BOLD response in the dorsomedial prefrontal cortex (BA 8) during performance monitoring. ATD did not affect the BOLD response during response inhibition.

conclusionsThis study provides more evidence for the suggested role of 5-HT in performance monitoring. Because ATD studies have revealed inconsistent effects of ATD on performance and on brain activation, it was suggested that gender and personality traits are important variables to take into account for future research.

Indexed as

Image EnhancementImage Processing, Computer-AssistedInhibition, PsychologicalMagnetic Resonance ImagingAdultAffectAttentionBrain MappingCerebral CortexCognitionCross-Over StudiesDiscrimination LearningDominance, CerebralDouble-Blind MethodHumansMaleOxygenSerotoninTryptophan

Identifiers

PMID16710715
OpenAlexW1971416987

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.