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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: Aug 8, 2025

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance

Published on: May 7, 2014

Lifespan differences in visual short-term memory load-modulated functional connectivity.

Selma Lugtmeijer¹, Linda Geerligs², Kamen A Tsvetanov³

¹Department of Psychology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada.

|February 27, 2023

Summary

This summary is machine-generated.

Working memory declines with age, impacting brain connectivity. This study found that while connectivity is strongest in attention and visual networks, it decreases across the cortex as people age, with no significant link to performance.

Keywords:

Aging Functional connectivity Lifespan Psychophysiological interactions Visual short-term memory Working memory

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Area of Science:

Neuroscience
Cognitive Psychology
Aging Research

Background:

Working memory is crucial for executive functions and declines with age.
Neural mechanisms of age-related working memory decline are not fully understood.
Previous studies on functional connectivity and aging used limited brain regions and age groups.

Purpose of the Study:

Investigate age-related changes in working memory load-modulated functional connectivity using a lifespan cohort.
Examine the relationship between functional connectivity, age, and task performance.
Employ a whole-brain approach to understand neural mechanisms of working memory decline.

Main Methods:

Analysis of Cambridge Centre for Ageing and Neuroscience (Cam-CAN) data.
Functional magnetic resonance imaging (fMRI) on 101 participants (aged 23-86).
Visual short-term memory task with varying loads, estimating whole-brain load-modulated functional connectivity via psychophysiological interactions.

Main Results:

Load-modulated functional connectivity was highest in dorsal attention and visual networks.
Connectivity strength decreased across the cortex with increasing age.
No significant whole-brain correlation found between connectivity and behavioral performance.

Conclusions:

Findings support the sensory recruitment model of working memory.
Age negatively impacts the modulation of functional connectivity by working memory load.
Older adults may have limited neural resources, hindering connectivity increases with higher task demands.