Cited by 22Neurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology StudiesCognitive Abilities and Testing

Dopamine Alters the Fidelity of Working Memory Representations according to Attentional Demands

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Fallon, Sean James, Zokaei, Nahid, Norbury, Agnes, Manohar, Sanjay G., Husain, Masud·2017·Journal of Cognitive Neuroscience

Abstract

Capacity limitations in working memory (WM) necessitate the need to effectively control its contents. Here, we examined the effect of cabergoline, a dopamine D2 receptor agonist, on WM using a continuous report paradigm that allowed us to assess the fidelity with which items are stored. We assessed recall performance under three different gating conditions: remembering only one item, being cued to remember one target among distractors, and having to remember all items. Cabergoline had differential effects on recall performance according to whether distractors had to be ignored and whether mnemonic resources could be deployed exclusively to the target. Compared with placebo, cabergoline improved mnemonic performance when there were no distractors but significantly reduced performance when distractors were presented in a precue condition. No significant difference in performance was observed under cabergoline when all items had to be remembered. By applying a stochastic model of response selection, we established that the causes of drug-induced changes in performance were due to changes in the precision with which items were stored in WM. However, there was no change in the extent to which distractors were mistaken for targets. Thus, D2 agonism causes changes in the fidelity of mnemonic representations without altering interference between memoranda.

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Authors
Fallon, S. J., Zokaei, N., Norbury, A., Manohar, S. G., & Husain, M.
Affiliations
  • University of Oxford (GB)
  • University of Cambridge (GB)
  • John Radcliffe Hospital (GB)
  • 1University of Oxford
Venue
Journal of Cognitive Neuroscience
Published
2017-04-01
Volume
29
Issue
4
Pages
728-738
ISSN
  • 0898-929X (ISSN-L)
  • 1530-8898
OpenAlex
W2558292291
Cited by
22
References
72
Citations by year
2025: 1 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 5
FWCI
1.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Cognitive Neuroscience (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion, cc-by)
  • PubMed Central (acceptedVersion, cc-by)
  • Cambridge University Engineering Department Publications Database (submittedVersion)
Funders
  • Wellcome Trust (206330)
  • British Academy
  • Medical Research Council (MR/P00878X/1)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
Keywords
working memory, dopamine, cabergoline, dopamine D2 receptor agonist, memory fidelity, attentional gating, distractor interference, precuing, response selection, stochastic modeling
MeSH terms
Cabergoline, Adult, Attention, Dopamine, Ergolines, Female, Humans, Male, Memory, Short-Term, Mental Recall, Task Performance and Analysis, Visual Perception, Receptors, Dopamine D2, Dopamine Agonists, Young Adult

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