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Related Concept Videos

Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

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The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
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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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Related Experiment Video

Updated: Nov 2, 2025

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording
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Some implications of postnatal hippocampal development.

Lynn Nadel1

  • 1Cognitive Science Program and Department of Psychology, University of Arizona, Tucson, Arizona, USA.

Hippocampus
|June 16, 2021
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Summary
This summary is machine-generated.

The hippocampus matures late, impacting early learning and memory functions like episodic memory. Its developmental period also makes it vulnerable to disruptions.

Keywords:
context codingdevelopmenthippocampusplace learning

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Related Experiment Videos

Last Updated: Nov 2, 2025

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cognitive Science

Background:

  • The hippocampus undergoes significant postnatal development in most species.
  • This delayed maturation affects early cognitive functions and brain system development.

Purpose of the Study:

  • To explore the implications of the hippocampus's delayed maturation.
  • To discuss research efforts over 40 years investigating these implications.

Main Methods:

  • Review of established knowledge on hippocampal development.
  • Discussion of research findings and collaborative efforts over four decades.

Main Results:

  • Delayed hippocampal maturation limits early place learning, context coding, and episodic memory.
  • Early life learning is shaped by concurrently functional brain systems.
  • The developing hippocampus is susceptible to environmental and chromosomal disruptions.

Conclusions:

  • Understanding the implications of delayed hippocampal maturation is crucial for developmental neuroscience.
  • Research highlights the vulnerability of the developing hippocampus and its impact on cognitive functions.