Cited by 86Neurotransmitter Receptor Influence on BehaviorSchizophrenia research and treatmentNeural and Behavioral Psychology Studies

Acute serotonin and dopamine depletion improves attentional control: findings from the Stroop task

Scholes, Kirsty E, Harrison, Ben J, O'Neill, Barry V, Leung, Sumie, Croft, Rodney J, Pipingas, Andrew, Phan, K Luan, Nathan, Pradeep J·2007·Neuropsychopharmacology

Abstract

Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be responsible for such impairments are poorly understood. In this study, we sought to investigate the influence of brain monoamine function on Stroop task performance in healthy participants using the established methods of acute dietary serotonin, dopamine, and combined monoamine depletion. The study was a double-blind placebo controlled design in which 12 healthy male participants completed the Stroop task under four acute treatment conditions: (a) balanced/placebo control, (b) acute tryptophan depletion, (c) acute tyrosine/phenylalanine depletion, and (d) acute tyrosine/phenylalanine/tryptophan depletion (combined monoamine depletion). Decreased Stroop interference indicating improved attentional control was observed after both tryptophan depletion and tyrosine/phenylalanine depletion, while there was no significant change in interference after combined monoamine depletion. Findings suggest that reduced tonic dopamine or serotonin activity within specific neural circuits (such as the striatum, anterior cingulate, or prefrontal cortex) may play a critical role in attentional control, possibly by improving gating of information via reducing noise in monoaminergic systems. These findings enhance our understanding of the neurochemical basis of attentional control and the possible cause of attentional control deficits in schizophrenia.

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  1. Rowley B, Van F, Mortimore C, Connell J (1997). Effects of acute tryptophan depletion on tests of frontal and temporal lobe function. J Psychopharmacol (Oxford) 11: A60.

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Authors
Scholes, K. E., Harrison, B. J., O'Neill, B. V., Leung, S., Croft, R. J., Pipingas, A., Phan, K. L., & Nathan, P. J.
Affiliations
  • The University of Melbourne (AU)
  • Monash University (AU)
  • Swinburne University of Technology (AU)
  • University of Chicago (US)
Corresponding author
Nathan, Pradeep J
Venue
Neuropsychopharmacology
Published
2006-12-06
Volume
32
Issue
7
Pages
1600-1610
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2012359728
Cited by
86
References
102
Citations by year
2026: 4 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 1 · 2018: 19 · 2017: 3 · 2016: 1 · 2015: 6 · 2014: 3 · 2013: 5 · 2012: 4
FWCI
2.13
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Research Online (University of Wollongong) (submittedVersion)
  • Swinburne figshare (Swinburne University of Technology) (submittedVersion)
Funders
  • Australian Government
  • Medical Research Council
  • National Health and Medical Research Council (400420, 345709)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
serotonin depletion, dopamine depletion, monoamine depletion, tryptophan depletion, attentional control, Stroop interference, schizophrenia, monoaminergic systems, striatum, anterior cingulate cortex, prefrontal cortex
MeSH terms
Adult, Attention, Brain, Brain Chemistry, Dopamine, Double-Blind Method, Humans, Male, Neural Pathways, Synaptic Transmission, Neuropsychological Tests, Placebos, Schizophrenia, Serotonin, Tryptophan, Tyrosine, Biogenic Monoamines, Mood Disorders

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