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Related Concept Videos

Working Memory01:24

Working Memory

416
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...
416
Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

349
The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
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High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

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Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
359
Interference and Decay01:16

Interference and Decay

192
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
192
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

279
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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Chunking01:12

Chunking

177
Chunking is a powerful cognitive technique that improves short-term memory retention by organizing information into smaller, more manageable units. The brain, limited by working memory capacity, can more easily process and store information when it is divided into "chunks" rather than presented as discrete, unrelated elements. Chunking is especially useful when dealing with large amounts of information, such as numerical sequences, words, or complex ideas.
The principle behind chunking...
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Related Experiment Video

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Reducing State Anxiety Using Working Memory Maintenance
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Unconsciously registered items reduce working memory capacity.

Amy U Barton1, Fernando Valle-Inclán2, Nelson Cowan3

  • 1Northwest Missouri State University, United States.

Consciousness and Cognition
|September 15, 2022
PubMed
Summary

Unconscious stimuli do not appear to be stored in working memory (WM). Although masked items impaired conscious memory, they were not successfully encoded themselves, suggesting a shared resource limitation.

Keywords:
AttentionConsciousnessContralateral delay activityUnconscious processingWorking memory

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Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • The relationship between conscious awareness and working memory (WM) content is debated.
  • Evidence suggests stimuli outside awareness can be retained, challenging the idea that WM exclusively holds conscious information.

Purpose of the Study:

  • To investigate whether conscious and unconscious items compete for a shared working memory store.
  • To determine if unconsciously perceived stimuli are actively maintained in WM.

Main Methods:

  • An experiment using continuous flash suppression (CFS) to mask some memory items while others remained visible.
  • Participants performed a change detection task on both masked and visible items after a retention interval.
  • Electroencephalography (EEG) was used to measure working memory load via Contralateral Delay Activity (CDA).

Main Results:

  • Change detection for visible items was significantly impaired by the presence of masked items.
  • Masked items were not detected above chance levels, indicating they were not successfully stored in WM.
  • EEG data did not reveal localized interference in WM load.

Conclusions:

  • Unconsciously perceived items do not occupy working memory.
  • The processing of unconscious stimuli may consume attentional resources, interfering with the maintenance of conscious information in WM.
  • A common pool of attentional resources might be shared between conscious and unconscious processing within WM.