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Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
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Updated: Sep 12, 2025

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
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Long-Term Memory Engrams From Development to Adulthood.

Abigail L Yu1,2, Laura A DeNardo1,3

  • 1Department of Physiology, University of California Los Angeles, Los Angeles, California, USA.

Hippocampus
|August 6, 2025
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Summary
This summary is machine-generated.

This review explores how memory traces (engrams) in the brain change from recent to remote, impacting adult long-term memory and infantile amnesia in development. Understanding engram cell function is key to memory consolidation and retrieval.

Keywords:
developmentinfantile amnesiamemory consolidationmemory engramsynaptic plasticity

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Area of Science:

  • Neuroscience
  • Memory Research
  • Developmental Neuroscience

Background:

  • Infantile amnesia contrasts with lifelong adult memories.
  • Significant progress in understanding the memory engram and its transformation.
  • Engram cells are the physical trace of memory in the brain.

Purpose of the Study:

  • To review the roles of engram cells in memory encoding, consolidation, retrieval, and forgetting.
  • To examine engram cell function from development through adulthood.
  • To synthesize current knowledge and propose future research directions.

Main Methods:

  • Focus on four key brain regions: hippocampus, retrosplenial cortex, medial prefrontal cortex, and anterior thalamic nuclei.
  • Review of recent studies on adult engram cell contributions, synaptic plasticity, and memory consolidation.
  • Examination of emerging knowledge on engram cells in the developing brain and infantile amnesia.

Main Results:

  • Adult engram cells in distinct brain regions contribute uniquely to memory consolidation.
  • Coordinated activity across brain regions supports long-term memory.
  • Developmental differences in engram cell function may underlie infantile amnesia and memory generalization.

Conclusions:

  • Engram cell dynamics are crucial for memory consolidation and long-term storage.
  • Developmental factors significantly shape the maturation of memory processes.
  • Further research is needed to fully understand memory consolidation and retrieval across the lifespan.