Cited by 51Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNeural and Behavioral Psychology Studies

Muscarinic M1 Receptor Overstimulation Disrupts Working Memory Activity for Rules in Primate Prefrontal Cortex

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Vijayraghavan, Susheel, Major, Alex James, Everling, Stefan·2018·Neuron

Abstract

Acetylcholine release in the prefrontal cortex (PFC), acting through muscarinic receptors, has an essential role in regulating flexible behavior and working memory (WM). General muscarinic receptor blockade disrupts PFC WM representations, while selective stimulation of muscarinic receptor subtypes is of great interest for the treatment of cognitive dysfunction in Alzheimer's disease. Here, we tested selective stimulation and blockade of muscarinic M1 receptors (M1Rs) in macaque PFC, during performance of a cognitive control task in which rules maintained in WM specified saccadic responses. We hypothesized that M1R blockade and stimulation would disrupt and enhance rule representation in WM, respectively. Unexpectedly, M1R blockade did not consistently affect PFC neuronal rule selectivity. Moreover, M1R stimulation suppressed PFC activity, and at higher doses, degraded rule representations. Our results suggest that, in primates, the deleterious effects of general muscarinic blockade on PFC WM activity are not mediated by M1Rs, while their overstimulation deteriorates PFC rule maintenance.

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Crossref · 10.1016/j.neuron.2018.05.027

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  • In rat and primate PFC, the α2-adrenoceptor and muscarinic M1 receptor modulate working memory via KCNQ potassium channels.

    “Recent studies of rat and primate PFC showed that the α2-adrenoceptor and muscarinic M1 receptor modulate working memory via KCNQ potassium channel [148–151].”

    From Development of prefrontal cortex (2022) · cites this paper as [150]

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Authors
Vijayraghavan, S., Major, A. J., & Everling, S.
Affiliations
Western University (CA)
Corresponding author
Everling, Stefan
Venue
Neuron
Publisher
Elsevier BV
Published
2018-06
Volume
98
Issue
6
Pages
1256-1268.e4
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2805882949
Cited by
51
References
88
Citations by year
2026: 6 · 2025: 5 · 2024: 4 · 2023: 7 · 2022: 8 · 2021: 8 · 2020: 5 · 2019: 6 · 2018: 2
FWCI
2.39
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Scholarship@Western (Western University) (submittedVersion)
Funders
  • Canadian Institutes of Health Research (FRN148365)
  • Canada First Research Excellence Fund
  • Ontario Graduate Scholarship
  • Natural Sciences and Engineering Research Council
  • Alzheimer’s Society London and Middlesex
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
M1 muscarinic receptor, muscarinic receptor blockade, working memory, prefrontal cortex, rule representation, cognitive control, acetylcholine, macaque, Alzheimer's disease, cholinergic modulation
MeSH terms
Allosteric Regulation, Animals, Benzamides, Iontophoresis, Macaca mulatta, (4-(m-Chlorophenylcarbamoyloxy)-2-butynyl)trimethylammonium Chloride, Memory, Short-Term, Neurons, Pirenzepine, Prefrontal Cortex, Muscarinic Agonists, Muscarinic Antagonists, Receptor, Muscarinic M1

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