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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 amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
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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 the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
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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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Related Experiment Video

Updated: Mar 24, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Gamma and Beta Bursts Underlie Working Memory.

Mikael Lundqvist1, Jonas Rose1,2, Pawel Herman3

  • 1The Picower Institute for Learning & Memory and Department of Brain & Cognitive Sciences, Massachusetts Institute of Technology, 43 Vassar Street, Cambridge, MA 02139, USA.

Neuron
|March 22, 2016
PubMed
Summary
This summary is machine-generated.

Working memory relies on discrete brain oscillations, not sustained neuron activity. Gamma oscillations in the prefrontal cortex gate information, supporting this dynamic model of memory.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Neuroscience

Background:

  • Working memory is traditionally linked to sustained neural firing.
  • Computational models propose complex dynamics involving oscillatory bursts.

Purpose of the Study:

  • Investigate the neural dynamics underlying working memory.
  • Differentiate between sustained activity and oscillatory bursts in working memory.

Main Methods:

  • Analysis of local field potentials (LFP) and neuron spiking in the prefrontal cortex (PFC) of monkeys.
  • Task involved a working memory paradigm.

Main Results:

  • Observed brief bursts of gamma oscillations (45-100 Hz) during memory encoding and reactivation.
  • Beta oscillations (20-35 Hz) indicated a default state, interrupted by task activity.
  • Gamma burst rate correlated with neuronal activity reflecting memory encoding/decoding.

Conclusions:

  • Working memory may be implemented through discrete oscillatory dynamics and spiking, not sustained activity.
  • Gamma bursts appear to regulate information access and prevent interference in working memory.