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Related Concept Videos

Long-term Potentiation01:25

Long-term Potentiation

2.7K
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
LTP can occur when...
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Long-term Potentiation01:35

Long-term Potentiation

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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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Updated: May 6, 2026

Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex
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Ex Vivo Optogenetic Interrogation of Long-Range Synaptic Transmission and Plasticity from Medial Prefrontal Cortex to Lateral Entorhinal Cortex

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Optogenetics and synaptic plasticity.

Yu-feng Xie1, Michael F Jackson, John F Macdonald

  • 11] Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg MB, R3E 0T6, Canada [2] Robarts Research Institute, University of Western Ontario, London ON, N6K 5K8, Canada.

Acta Pharmacologica Sinica
|October 29, 2013
PubMed
Summary
This summary is machine-generated.

Optogenetics offers precise control over neuronal activity, overcoming limitations of traditional methods for studying brain functions. This technique is crucial for understanding synaptic plasticity and learning in live animals.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Classical electrophysiology limits understanding of complex neural interactions.
  • Electrical field stimulation lacks precision in controlling specific neuronal populations and inputs.

Purpose of the Study:

  • To summarize recent advancements in applying optogenetics to study synaptic plasticity.
  • To highlight optogenetics' potential in elucidating neural substrates of behavior and learning.

Main Methods:

  • Utilizing optogenetics with light-activated channels (microbial opsins) for targeted neuronal control.
  • Applying techniques to specific neuronal populations in live, freely behaving animals.
  • Achieving millisecond precision optical control of neural activity.

Main Results:

  • Optogenetics enables precise and selective control of neuronal activity, overcoming classical limitations.
  • The technique allows for non-invasive optical manipulation of neural circuits.
  • Optogenetics is increasingly applied to investigate synaptic plasticity and memory.

Conclusions:

  • Optogenetics provides essential tools for detailed investigation of synaptic transmission and integration.
  • This method is vital for understanding the neural basis of complex behaviors, learning, and memory.
  • Recent progress shows significant potential for optogenetics in neuroscience research.