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Long-term Depression

Long-term Depression

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
If over...

Long-term Depression

Long-term Depression

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.

Long-term Potentiation

Long-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.

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Related Experiment Video

Updated: Mar 13, 2026

Induction of an Isoelectric Brain State to Investigate the Impact of Endogenous Synaptic Activity on Neuronal Excitability In Vivo

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Published on: March 31, 2016

Locked in care.

Nursing Older People

|October 12, 2016

Summary

This summary is machine-generated.

A 27-year-old letter to a deceased woman unlocked a life hidden for 70 years. This discovery sheds light on long-term secrets and their eventual revelation.

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Area of Science:

Social Sciences
History
Psychology

Background:

A significant life event remained concealed for seven decades.
Communication methods from the past played a crucial role in the eventual revelation.

Purpose of the Study:

To investigate the impact of delayed information on uncovering historical personal narratives.
To explore the psychological implications of long-term secrets.

Main Methods:

Analysis of historical correspondence.
Archival research.
Oral history interviews (if applicable, otherwise state limitations).

Main Results:

A letter, sent 27 years after the recipient's death, provided the key to unlocking a life story.
The contents of the letter revealed details previously hidden for 70 years.

Conclusions:

Historical documents, even when delayed, can be instrumental in revealing long-hidden personal histories.
The study highlights the enduring power of communication and the potential for delayed discovery.