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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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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:46

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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.
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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.

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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Epigenetic mechanisms in memory and synaptic function.

Faraz A Sultan1, Jeremy J Day

  • 1Department of Neurobiology, University of Alabama at Birmingham, Evelyn F McKnight Brain Institute, 1007 Shelby Building, 1825 University Boulevard Birmingham, AL 35294-2182, USA.

Epigenomics
|November 30, 2011
PubMed
Summary
This summary is machine-generated.

Epigenetics, the study of gene expression changes without altering DNA sequence, plays a crucial role in how the adult central nervous system (CNS) forms and stores memories. These epigenetic mechanisms are vital for learning and behavior.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • The term 'epigenetics' was introduced seventy years ago.
  • Epigenetic mechanisms are hypothesized to regulate memory and behavior.
  • They provide stable molecular processes resistant to neuronal proteome turnover.

Purpose of the Study:

  • To discuss evidence supporting the role of neural epigenetic modifications in memory.
  • To review epigenetic regulation of synaptic plasticity.
  • To examine the influence of epigenetic mechanisms on gene expression during behavioral experiences.

Main Methods:

  • Review of existing scientific literature.
  • Analysis of evidence for epigenetic modifications in memory formation, consolidation, and storage.
  • Examination of epigenetic regulation of synaptic plasticity and gene expression.

Main Results:

  • Evidence supports a role for neural epigenetic modifications in memory processing.
  • Epigenetic mechanisms are involved in synaptic plasticity, a cellular basis for memory.
  • Multiple epigenetic mechanisms coordinate selective gene expression in response to behavior.

Conclusions:

  • Epigenetic mechanisms are critical for memory formation, consolidation, and storage in the adult CNS.
  • Understanding these mechanisms is key to elucidating neural function and behavior.
  • Further research is needed to fully understand the complex role of epigenetics in the brain.