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Synaptic plasticity-dependent competition rule influences memory formation

Biology

Synaptic plasticity-dependent competition rule influences memory formation

Y. Jeong, H. Cho, et al.

This exciting study conducted by Yire Jeong, Hye-Yeon Cho, Mujun Kim, Jung-Pyo Oh, Min Soo Kang, Miran Yoo, Han-Sol Lee, and Jin-Hee Han explores how synaptic plasticity in the lateral amygdala affects memory formation. By using optogenetic techniques, researchers demonstrated that enhancing specific synapses can preferentially influence memory encoding, unveiling a fascinating synaptic competition rule behind memory processes.

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Playback language: English
Abstract
This study investigates the role of synaptic plasticity in memory formation by manipulating synaptic inputs to the lateral amygdala (LA) using optogenetic tools. The researchers found that optogenetically potentiating synapses normally not strengthened by fear conditioning leads to preferential memory encoding in the manipulated cell ensembles. This effect is reversed by optical long-term depression (LTD) delivered shortly after training, while optical long-term potentiation (LTP) alone is sufficient to induce preferential encoding. These results suggest a synaptic plasticity-dependent competition rule underlying memory formation.
Publisher
Nature Communications
Published On
Jun 24, 2021
Authors
Yire Jeong, Hye-Yeon Cho, Mujun Kim, Jung-Pyo Oh, Min Soo Kang, Miran Yoo, Han-Sol Lee, Jin-Hee Han
Tags
synaptic plasticity
memory formation
optogenetics
lateral amygdala
long-term potentiation
fear conditioning

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