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Related Concept Videos

Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

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Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function. They...

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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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NMDA receptors and memory encoding.

Richard G M Morris1

  • 1Centre for Cognitive and Neural Systems, Edinburgh Neuroscience, The University of Edinburgh, 1 George Square, Edinburgh EH8 9JZ, UK. r.g.m.morris@ed.ac.uk

Neuropharmacology
|May 1, 2013
PubMed
Summary
This summary is machine-generated.

Thirty years ago, R-2-amino-5-phosphonopentanoate (d-AP5) blocked long-term potentiation, revealing the crucial role of glutamate receptors in memory encoding and synaptic plasticity.

Keywords:
AmygdalaEncodingGRINGlutamate receptorHippocampusLearningNeocortexRetrievalStorage consolidationWatermaze

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Cognitive Science

Background:

  • The discovery that R-2-amino-5-phosphonopentanoate (d-AP5) selectively blocks long-term potentiation (LTP) at hippocampal synapses was a pivotal moment.
  • This finding spurred extensive research into glutamate receptors, particularly NMDA receptors, and their functions in the brain.

Purpose of the Study:

  • To recount the personal journey and scientific contributions to understanding the role of NMDA receptor activation in memory encoding.
  • To explore the development, acceptance, and challenges associated with the hypothesis that NMDA receptor activation is essential for memory formation.

Main Methods:

  • Review of historical research and personal scientific endeavors.
  • Investigation into the functional role of NMDA receptors in memory encoding using LTP as a model.
  • Exploration of calcium signaling via NMDA receptors in various brain functions.

Main Results:

  • The initial observation of d-AP5's effect on LTP was a catalyst for understanding glutamatergic synapses.
  • NMDA receptor activation was found to be essential for memory encoding, but not for memory storage.
  • Research has elucidated the structural and functional aspects of NMDA receptors, linking them to diverse cognitive processes.

Conclusions:

  • The discovery concerning d-AP5 and LTP has profoundly advanced our understanding of synaptic plasticity and memory.
  • NMDA receptors play a critical role in memory encoding, with ongoing research exploring their broader cognitive functions.
  • Continued investigation into NMDA receptor function promises new insights into neurological processes and potential therapeutic targets.