Cited by 662Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionNeuroscience and Music Perception

Role of cortical N-methyl-D-aspartate receptors in auditory sensory memory and mismatch negativity generation: implications for schizophrenia.

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Javitt, D C, Steinschneider, M, Schroeder, C E, Arezzo, J C·1996·Proceedings of the National Academy of Sciences

Abstract

Working memory refers to the ability of the brain to store and manipulate information over brief time periods, ranging from seconds to minutes. As opposed to long-term memory, which is critically dependent upon hippocampal processing, critical substrates for working memory are distributed in a modality-specific fashion throughout cortex. N-methyl-D-aspartate (NMDA) receptors play a crucial role in the initiation of long-term memory. Neurochemical mechanisms underlying the transient memory storage required for working memory, however, remain obscure. Auditory sensory memory, which refers to the ability of the brain to retain transient representations of the physical features (e.g., pitch) of simple auditory stimuli for periods of up to approximately 30 sec, represents one of the simplest components of the brain working memory system. Functioning of the auditory sensory memory system is indexed by the generation of a well-defined event-related potential, termed mismatch negativity (MMN). MMN can thus be used as an objective index of auditory sensory memory functioning and a probe for investigating underlying neurochemical mechanisms. Monkeys generate cortical activity in response to deviant stimuli that closely resembles human MMN. This study uses a combination of intracortical recording and pharmacological micromanipulations in awake monkeys to demonstrate that both competitive and noncompetitive NMDA antagonists block the generation of MMN without affecting prior obligatory activity in primary auditory cortex. These findings suggest that, on a neurophysiological level, MMN represents selective current flow through open, unblocked NMDA channels. Furthermore, they suggest a crucial role of cortical NMDA receptors in the assessment of stimulus familiarity/unfamiliarity, which is a key process underlying working memory performance.

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Crossref · 10.1073/pnas.93.21.11962

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Authors
Javitt, D. C., Steinschneider, M., Schroeder, C. E., & Arezzo, J. C.
Affiliations
Albert Einstein College of Medicine (US)
Venue
Proceedings of the National Academy of Sciences
Published
1996-10-15
Volume
93
Issue
21
Pages
11962-11967
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1996141026
Cited by
662
References
33
Citations by year
2026: 12 · 2025: 17 · 2024: 15 · 2023: 19 · 2022: 21 · 2021: 23 · 2020: 40 · 2019: 34 · 2018: 24 · 2017: 39 · 2016: 24 · 2015: 42 · 2014: 26 · 2013: 32 · 2012: 21
FWCI
2.70
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r03mh046962-02, 2r01mh006723-28)
  • U.S. Public Health Service
  • National Institute of Mental Health (R01 MH06723, R03 MH46962)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
Keywords
NMDA receptor, auditory sensory memory, mismatch negativity, working memory, schizophrenia, NMDA receptor antagonists, primary auditory cortex, event-related potentials, stimulus familiarity, cortical excitability
MeSH terms
Animals, Auditory Cortex, Auditory Perception, Bicuculline, Evoked Potentials, Hearing, Humans, Macaca fascicularis, Memory, Phencyclidine, Pipecolic Acids, Receptors, GABA-A, Schizophrenia, Schizophrenic Psychology, Time Factors, Receptors, N-Methyl-D-Aspartate, Excitatory Amino Acid Antagonists, GABA Antagonists, GABA-A Receptor Antagonists

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