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Related Concept Videos

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
Long-Term Memory01:18

Long-Term Memory

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.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Long-term Potentiation01:35

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.
Long-term Potentiation01:25

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.
Hebbian LTP
LTP can occur when presynaptic neurons...
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

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...
Brain Waves01:23

Brain Waves

Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:

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Related Experiment Video

Updated: Jun 18, 2026

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice
07:33

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Published on: June 29, 2018

Theta and alpha oscillations during working-memory maintenance predict successful long-term memory encoding.

Patrick H Khader1, Kerstin Jost, Charan Ranganath

  • 1Experimental and Biological Psychology, Philipps-University Marburg, Germany. khader@staff.uni-marburg.de

Neuroscience Letters
|November 20, 2009
PubMed
Summary
This summary is machine-generated.

This study reveals that specific brain oscillations, alpha and theta, during memory tasks are linked to successful long-term memory encoding. Higher power in these brainwaves predicts better memory recall.

More Related Videos

Automatic Detection of Highly Organized Theta Oscillations in the Murine EEG
09:35

Automatic Detection of Highly Organized Theta Oscillations in the Murine EEG

Published on: March 10, 2017

Related Experiment Videos

Last Updated: Jun 18, 2026

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice
07:33

Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

Published on: June 29, 2018

Automatic Detection of Highly Organized Theta Oscillations in the Murine EEG
09:35

Automatic Detection of Highly Organized Theta Oscillations in the Murine EEG

Published on: March 10, 2017

Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • Working memory (WM) and long-term memory (LTM) encoding mechanisms are well-studied but often in isolation.
  • The interaction between WM maintenance and LTM encoding is not well understood.

Purpose of the Study:

  • To investigate if EEG oscillations during the delay period of a memory task correlate with successful LTM encoding.
  • To explore the relationship between WM load-related neural processes and LTM encoding.

Main Methods:

  • Utilized electroencephalography (EEG) during a delayed matching-to-sample task.
  • Analyzed alpha and theta power oscillations during the memory delay period.
  • Correlated EEG oscillation power with subsequent stimulus recall (LTM encoding).

Main Results:

  • Increased alpha power over occipital-to-parietal sites was associated with subsequently remembered stimuli.
  • Increased theta power over parietal-to-central electrodes was also linked to subsequently remembered stimuli.
  • Findings align with the hypothesis that WM load-associated processes support LTM encoding.

Conclusions:

  • Alpha and theta brain oscillations during memory delays play a role in successful LTM encoding.
  • These findings suggest a neural overlap between WM maintenance and LTM encoding processes.
  • EEG oscillations provide insights into the neural basis of memory consolidation.