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Working Memory

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...

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Related Experiment Video

Updated: Dec 18, 2025

Resting-State Connectivity and Neuroimaging of Prefrontal Cortex Activity During a Block-Design Yoga Asana Practice Using fNIRS

Resting-State Connectivity and Neuroimaging of Prefrontal Cortex Activity During a Block-Design Yoga Asana Practice Using fNIRS

Published on: June 24, 2025

Brain activity during a working memory task in different postures: an EEG study.

Ju-Yeon Jung¹, Hwi-Young Cho^1,2, Chang-Ki Kang^1,3,4,5

¹Department of Health Science, Gachon University Graduate School, Incheon, Republic of Korea.

|June 20, 2020

Summary

This summary is machine-generated.

Brain efficiency for working memory tasks is higher when sitting or standing compared to lying down. This study highlights how posture impacts cognitive function and suggests optimizing workplace environments for better brain activity.

Keywords:

EEG Working memory n-back postural change sit/stand workstation

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Area of Science:

Neuroscience
Cognitive Science
Ergonomics

Background:

Most individuals work in a seated position, despite supine comfort and standing health benefits.
The impact of different working postures on brain activity efficiency during cognitive tasks remains largely unexplored.

Purpose of the Study:

To compare brain activity efficiency across sitting, standing, and supine postures during working memory tasks.
To identify the optimal posture for enhanced cognitive performance.

Main Methods:

Electroencephalogram (EEG) signals were analyzed in 24 subjects performing a 2-back task.
Accuracy and reaction times were recorded to assess task performance.
Differences in brain waves, particularly delta waves and frontal lobe activity, were examined across postures.

Main Results:

Significant differences in brain wave patterns were observed between sitting/standing and supine postures.
Brain efficiency, especially in the frontal lobe, was notably higher in standing and sitting positions compared to the supine position.
Delta wave activity showed particular variation across the tested postures.

Conclusions:

Postural variations significantly influence the efficiency of brain activity during working memory tasks.
Sitting and standing postures appear more conducive to efficient brain function than the supine position.
Findings have implications for designing healthier and more productive workplace environments.