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Related Concept Videos

Neuroplasticity01:01

Neuroplasticity

2.4K
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Long-term Depression01:05

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term Depression01:03

Long-term Depression

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
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Long-term Potentiation01:25

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.
Hebbian LTP
LTP can occur when...
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Long-term Potentiation01:35

Long-term Potentiation

59.4K
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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Integration of Synaptic Events01:28

Integration of Synaptic Events

5.7K
Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
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Updated: Mar 26, 2026

3D Modeling of Dendritic Spines with Synaptic Plasticity
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3D Modeling of Dendritic Spines with Synaptic Plasticity

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Synaptic Plasticity, Metaplasticity and Depression.

Linnea R Vose, Patric K Stanton1

  • 1Department of Cell Biology & Anatomy, New York Medical College, Valhalla, NY, 10595, USA.

Current Neuropharmacology
|February 3, 2016
PubMed
Summary
This summary is machine-generated.

Persistent depressive states may stem from changes in synaptic plasticity and metaplasticity. Glutamatergic transmission alterations in mood-regulating brain regions are key to affective homeostasis and drug development.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Molecular Biology

Background:

  • Depression is linked to altered neurotransmitter function.
  • Previous research lacked mechanistic links between neurophysiology and mood.
  • Synaptic plasticity and metaplasticity are implicated in mood disorders.

Purpose of the Study:

  • Review recent findings on synaptic plasticity and metaplasticity in depression.
  • Explore the role of glutamatergic transmission in affective homeostasis.
  • Identify therapeutic targets for depression drug development.

Main Methods:

  • Review of current scientific literature.
  • Analysis of activity-dependent synaptic changes (plasticity).
  • Examination of metaplasticity mechanisms in mood regulation.

Main Results:

  • Long-term synaptic plasticity involves strengthening/weakening connections.
  • Neurochemical alterations include receptor changes and structural modifications.
  • Glutamatergic transmission in mood regions is crucial for affective balance.

Conclusions:

  • Synaptic plasticity and metaplasticity are critical in establishing/reversing depressive states.
  • Altered glutamatergic transmission in mood circuits represents a promising therapeutic avenue.
  • Further research into metaplasticity mechanisms could yield novel depression treatments.