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Related Concept Videos

System of Memory01:23

System of Memory

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Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
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Long-Term Memory01:18

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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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Sensory Memory01:14

Sensory Memory

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Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
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Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

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Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
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Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

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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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Explicit Memories01:27

Explicit Memories

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Explicit memories, also known as declarative memories, are consciously remembered, recalled, and reported. Studying for a chemistry exam involves material that will become part of explicit memory. There are two types of explicit memory: episodic and semantic.
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Related Experiment Video

Updated: Oct 2, 2025

A Real-world What-Where-When Memory Test
09:13

A Real-world What-Where-When Memory Test

Published on: May 16, 2017

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Short-term, intermediate-term, and long-term memories

M R Rosenzweig1, E L Bennett, P J Colombo

  • 1Department of Psychology, University of California, Berkeley 94720.

Behavioural Brain Research
|November 30, 1993
PubMed
Summary
This summary is machine-generated.

Investigating memory formation in chicks reveals distinct stages beyond short-term and long-term memory. Intermediate-term memory (ITM) and long-term memory (LTM) formation depend on different protein kinase activities.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Animal Behavior

Background:

  • The traditional model of memory distinguishes between short-term memory (STM) and long-term memory (LTM).
  • Some research suggests an intermediate-term memory (ITM) stage exists.
  • Understanding memory stages is crucial for cognitive research.

Purpose of the Study:

  • To investigate the temporal stages of memory formation and storage.
  • To determine if the traditional STM/LTM model is sufficient.
  • To explore the neurobiological underpinnings of different memory stages.

Main Methods:

  • Utilized chicks as a model organism for memory research.
  • Employed a weak training paradigm to analyze retention functions.
  • Administered various kinase inhibitors to probe molecular mechanisms.

Main Results:

  • Identified four memory components: memory buffer, STM, ITM, and LTM.
  • Demonstrated that ITM is impaired by calcium/calmodulin kinase inhibitors (15-30 min post-training).
  • Showed LTM is inhibited by PKA, PKC, or PKG inhibitors (by 60 min post-training).

Conclusions:

  • The traditional two-stage memory model may be an oversimplification.
  • Evidence supports distinct molecular pathways for ITM and LTM.
  • Further research is needed to fully elucidate complex memory consolidation processes.