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Related Concept Videos

Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
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Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
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Long-term Potentiation01:25

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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
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Long-term Potentiation01:35

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Related Experiment Video

Updated: Jul 3, 2026

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
07:17

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[Molecular mechanisms for memory formation].

Toshiya Manabe1

  • 1Division of Neuronal Network, Department of Basic Medical Sciences, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan.

Brain and Nerve = Shinkei Kenkyu No Shinpo
|July 24, 2008
PubMed
Summary

N-Methyl-D-aspartate (NMDA) receptors regulate synaptic plasticity and memory formation in the central nervous system (CNS). Their tyrosine phosphorylation influences channel activity and memory abilities, highlighting their critical role.

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Area of Science:

  • Neuroscience
  • Molecular and Cellular Biology
  • Neurotransmission

Context:

  • Excitatory synaptic transmission in the central nervous system (CNS) relies on glutamate and its receptors.
  • Alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors mediate normal transmission, while N-Methyl-D-aspartate (NMDA) receptors activate during high activity.
  • NMDA receptor activation is crucial for initiating biochemical cascades underlying synaptic plasticity.

Purpose:

  • To elucidate the role of N-Methyl-D-aspartate (NMDA) receptor function in synaptic plasticity and memory formation.
  • To investigate the impact of tyrosine phosphorylation on NMDA receptor activity and its implications for memory.
  • To understand the molecular mechanisms linking NMDA receptor modulation to long-term potentiation (LTP) and memory.

Summary:

  • Calcium influx through NMDA receptors triggers biochemical pathways, including activation of calcium/calmodulin-dependent protein kinase II (CaMKII), leading to AMPA receptor modulation.
  • Tyrosine phosphorylation of NMDA receptors affects channel function and the localization of key proteins like CaMKII within the postsynaptic spine.
  • Genetic manipulation of tyrosine phosphorylation in the NR2B subunit of NMDA receptors alters memory capabilities in mice, demonstrating a direct link to cognitive function.

Impact:

  • Highlights the critical role of NMDA receptor modulation in regulating synaptic plasticity at molecular and cellular levels.
  • Establishes a connection between NMDA receptor function, biochemical signaling, and memory formation in the CNS.
  • Suggests potential therapeutic targets for memory disorders by focusing on NMDA receptor regulation and tyrosine phosphorylation.