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Related Concept Videos

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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Related Experiment Video

Updated: Sep 8, 2025

High-resolution Structural Magnetic Resonance Imaging of the Human Subcortex In Vivo and Postmortem
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Investigating working memory updating processes of the human subcortex using 7T MRI.

Anne C Trutti1,2, Zsuzsika Sjoerds2, Russell J Boag1

  • 1Integrative Model-Based Neuroscience Research Unit, University of Amsterdam, Amsterdam, Netherlands.

Elife
|June 25, 2025
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Summary
This summary is machine-generated.

Subcortical regions, particularly the basal ganglia, are involved in updating working memory, especially during information substitution. This research challenges the striatal gating mechanism, highlighting midbrain dopamine

Keywords:
basal gangliahumanhuman subcortexmidbrainneuroscience

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • Dopamine's role in working memory updating is suggested by prior research.
  • The striatum is hypothesized to be critical for working memory gating.

Purpose of the Study:

  • Investigate subcortical and dopaminergic involvement in working memory updating subprocesses.
  • Examine the role of the striatum in working memory gating.

Main Methods:

  • Utilized the reference-back task and ultrahigh field 7 Tesla functional magnetic resonance imaging (fMRI).
  • Employed a scanning protocol optimized for subcortical BOLD sensitivity.

Main Results:

  • No subcortical activation observed during working memory gate opening; frontoparietal regions were predominantly activated.
  • Subcortical activation was noted during gate closing.
  • Widespread subcortical activation, including basal ganglia, occurred in a ready-to-update state.
  • Activation in dopamine-producing midbrain regions, striatum, thalamus, and prefrontal cortex was observed during information substitution.

Conclusions:

  • Findings challenge the concept of a striatal gating mechanism for working memory.
  • The basal ganglia appear involved in general updating processes, not specifically gate control.
  • Information substitution into working memory is a midbrain-driven updating process involving the basal ganglia-thalamo-cortical loop, potentially modulated by dopamine.