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Updated: Aug 10, 2026
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Long-term Potentiation of Perforant Pathway-dentate Gyrus Synapse in Freely Behaving Mice
Published on: November 29, 2013
Long-term potentiation across rat cerebello-thalamic synapses in vitro
T D Aumann1, S J Redman, M K Horne
1Department of Anatomy, Monash University, Clayton, Victoria, Australia.taumann@u.washington.edu
Neuroscience Letters
|June 16, 2000
Summary
Long-term potentiation, a key mechanism for learning and memory, was physiologically expressed at rat cerebello-thalamic synapses. This finding supports the role of synaptic plasticity in motor adaptation.
Area of Science:
- Neuroscience
- Synaptic Plasticity
- Motor Control
Background:
- Cerebello-thalamic synapses show structural changes linked to motor adaptation.
- Previous research indicated potential for long-term potentiation (LTP) at these synapses.
Purpose of the Study:
- To determine if LTP can be physiologically expressed at rat cerebello-thalamic synapses.
- To investigate the effects of high-frequency stimulation on these synapses.
Main Methods:
- Intracellular recordings of excitatory post-synaptic potentials in rat thalamic neurons (17-24 days old).
- Electrical stimulation of cerebello-thalamic afferents using low-frequency control stimuli and high-frequency trains (100 Hz, 200 Hz).
Main Results:
- 100 Hz conditioning induced LTP in 5/6 cells and long-term depression (LTD) in 1/6 cells.
- 200 Hz conditioning did not induce LTP but caused LTD in 1/3 cells and no change in 2/3 cells.
Conclusions:
- Long-term potentiation can be physiologically evoked at rat cerebello-thalamic synapses in vitro.
- Synaptic plasticity mechanisms like LTP are likely involved in motor adaptation processes.
Related Concept Videos
01:35Long-term Potentiation
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.
01:25Long-term Potentiation
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 presynaptic neurons...
Hebbian LTP
LTP can occur when presynaptic neurons...