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Related Concept Videos

Working Memory01:24

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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...
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The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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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 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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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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Related Experiment Video

Updated: Oct 30, 2025

Recording Spatially Restricted Oscillations in the Hippocampus of Behaving Mice
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Gamma oscillations modulate working memory recall precision.

Lyall Thompson1, Janine Khuc1, Maria Silvia Saccani1

  • 1Department of Psychology, Goldsmiths, University of London, Lewisham Way, London, SE14 6NW, UK.

Experimental Brain Research
|July 5, 2021
PubMed
Summary
This summary is machine-generated.

Parietal gamma stimulation enhanced working memory recall precision, particularly for high-baseline performers. This suggests gamma oscillations modulate working memory, with individual differences influencing outcomes.

Keywords:
AttentionGamma oscillationsInhibitionWorking memorytACS

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Related Experiment Videos

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Area of Science:

  • Cognitive Neuroscience
  • Neurostimulation

Background:

  • Working memory (WM) is crucial for attention and inhibition.
  • Brain oscillations, particularly parietal gamma and alpha bands, are linked to these abilities.
  • The modulatory role of these oscillations on attention and inhibition remains unclear.

Purpose of the Study:

  • To investigate if parietal gamma and alpha brain oscillations modulate attention and inhibitory abilities within working memory.
  • To determine the effects of transcranial alternating current stimulation (tACS) on working memory performance.

Main Methods:

  • 51 young participants received parietal gamma-tACS, alpha-tACS, or sham stimulation.
  • A working memory task with probabilistic retrospective cues (valid, invalid, neutral) was used.
  • Performance was assessed based on recall precision and misbinding errors.

Main Results:

  • Parietal gamma-tACS significantly improved working memory recall precision compared to alpha-tACS and sham.
  • High-baseline performers showed selective improvement in misbinding errors and memory precision with gamma-tACS, especially for invalid cues.
  • Low-baseline performers did not show significant performance changes across stimulation conditions.

Conclusions:

  • Parietal gamma oscillations play a modulatory role in working memory recall.
  • Individual baseline performance influences the effectiveness of gamma-tACS on working memory.
  • Gamma-tACS may enhance attentional processes critical for working memory, particularly under demanding conditions.