Cited by 50Schizophrenia research and treatmentNeuroscience and Neuropharmacology ResearchNeural dynamics and brain function

Blocking NMDAR Disrupts Spike Timing and Decouples Monkey Prefrontal Circuits: Implications for Activity-Dependent Disconnection in Schizophrenia

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Zick, Jennifer L., Blackman, Rachael K., Crowe, David A., Amirikian, Bagrat, DeNicola, Adele L., Netoff, Theoden I., Chafee, Matthew V.·2018·Neuron

Abstract

We employed multi-electrode array recording to evaluate the influence of NMDA receptors (NMDAR) on spike-timing dynamics in prefrontal networks of monkeys as they performed a cognitive control task measuring specific deficits in schizophrenia. Systemic, periodic administration of an NMDAR antagonist (phencyclidine) reduced the prevalence and strength of synchronous (0-lag) spike correlation in simultaneously recorded neuron pairs. We employed transfer entropy analysis to measure effective connectivity between prefrontal neurons at lags consistent with monosynaptic interactions and found that effective connectivity was persistently reduced following exposure to the NMDAR antagonist. These results suggest that a disruption of spike timing and effective connectivity might be interrelated factors in pathogenesis, supporting an activity-dependent disconnection theory of schizophrenia. In this theory, disruption of NMDAR synaptic function leads to dysregulated timing of action potentials in prefrontal networks, accelerating synaptic disconnection through a spike-timing-dependent mechanism.

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Authors
Zick, J. L., Blackman, R. K., Crowe, D. A., Amirikian, B., DeNicola, A. L., Netoff, T. I., & Chafee, M. V.
Affiliations
  • University of Minnesota (US)
  • Augsburg University (US)
Corresponding author
Chafee, Matthew V.
Venue
Neuron
Publisher
Elsevier BV
Published
2018-06
Volume
98
Issue
6
Pages
1243-1255.e5
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2805153744
Cited by
50
References
72
Citations by year
2026: 6 · 2025: 2 · 2024: 4 · 2023: 9 · 2022: 6 · 2021: 13 · 2020: 5 · 2019: 5
FWCI
4.53
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Mental Health (R01MH077779, R01MH107491, 5F30MH108205-02, R25 MH101076, F31MH109238)
  • National Institute of General Medical Sciences (T32 GM008244, T32GM847121)
  • Wilfred Wetzel Graduate Fellowship
  • Minnesota Medical Foundation
  • Winston and Maxine Wallin Neuroscience Discovery Fund
  • MnDrive Neuromodulation Fellowship
  • American Brain Sciences Chair
  • Department of Veterans Affairs
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
NMDA receptor, phencyclidine, schizophrenia, prefrontal cortex, spike timing, spike synchronization, effective connectivity, transfer entropy, cognitive control deficits
MeSH terms
Action Potentials, Animals, Cognition, Cortical Synchronization, Macaca mulatta, Neural Pathways, Neurons, Phencyclidine, Schizophrenia, Task Performance and Analysis, Time Factors, Receptors, N-Methyl-D-Aspartate, Prefrontal Cortex, Excitatory Amino Acid Antagonists, Executive Function

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