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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.

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Related Experiment Video

Updated: May 11, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
10:38

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

Published on: July 16, 2015

Illumination influences working memory: an EEG study.

Jin Young Park1, Byoung-Kyong Min, Young-Chul Jung

  • 1Department of Psychiatry, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Republic of Korea.

Neuroscience
|May 23, 2013
PubMed
Summary
This summary is machine-generated.

High illuminance reduced frontal electroencephalogram (EEG) theta activity during a working memory task, even though task performance remained unchanged. This suggests lighting impacts brain function without altering behavioral outcomes.

Keywords:
ACCANOVAEEGERPLEDSternberg taskanalysis of varianceanterior cingulate cortexcolor-temperatureelectroencephalogramevent-related potentialfrontal EEG theta activityilluminancelight-emitting diodeworking memory

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Last Updated: May 11, 2026

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Area of Science:

  • Cognitive Neuroscience
  • Human Factors Engineering
  • Neuroscience

Background:

  • Illumination significantly impacts daily life and cognitive functions.
  • Understanding how lighting affects brain activity is crucial for optimizing work environments.

Purpose of the Study:

  • To investigate the effects of different illumination conditions on brain activity during a working memory task.
  • To determine if illumination modulates electroencephalogram (EEG) correlates of cognitive load.

Main Methods:

  • Participants performed the Sternberg working memory task under four illumination conditions (2 color temperatures x 2 illuminance levels).
  • Electroencephalogram (EEG) was recorded to analyze brain activity, specifically frontal theta and event-related potentials.
  • Behavioral performance metrics were collected alongside EEG data.

Main Results:

  • Higher illuminance levels significantly decreased frontal EEG theta activity compared to lower illuminance.
  • No significant differences in task performance were observed across illumination conditions.
  • The latency of early event-related potential components (e.g., N1) was significantly modulated by illumination.

Conclusions:

  • Illumination conditions demonstrably modulate brain activity, specifically EEG theta power and event-related potentials.
  • Despite effects on brain activity, the tested lighting conditions did not alter behavioral performance in the working memory task.
  • Further research is needed to identify optimal lighting parameters for enhancing cognitive functions like working memory.