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Working Memory01:24

Working Memory

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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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Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
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Motor threshold predicts working memory performance in healthy humans.

Nathalie Schicktanz1, Kyrill Schwegler1, Matthias Fastenrath2

  • 1Division of Cognitive Neuroscience, Department of Psychology, University of Basel Basel, Switzerland ; Psychiatric University Clinics, University of Basel Basel, Switzerland.

Annals of Clinical and Translational Neurology
|October 31, 2014
PubMed
Summary
This summary is machine-generated.

Higher cortical excitability, indicated by a lower resting motor threshold, is linked to better working memory performance in healthy adults. This finding connects brain excitability to cognitive function and may inform conditions with altered brain activity.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Human Physiology

Background:

  • Cognitive functions, including working memory, rely on neuronal excitability across cortical networks.
  • The relationship between individual differences in cortical excitability and working memory performance remains unclear.

Purpose of the Study:

  • To investigate the association between cortical excitability and working memory performance in healthy young adults.
  • To determine if variations in corticospinal excitability correlate with differences in 2-back task performance.

Main Methods:

  • Utilized transcranial magnetic stimulation (TMS) to assess corticospinal excitability.
  • Measured resting motor threshold (RMT) as an indicator of excitability.
  • Administered a 2-back working memory task to 188 healthy young participants.

Main Results:

  • Individuals with a lower resting motor threshold (indicating higher corticospinal excitability) demonstrated enhanced 2-back working memory performance.
  • A significant inverse correlation was observed between RMT and working memory task accuracy.

Conclusions:

  • Cortical excitability is a significant factor influencing individual differences in working memory capacity.
  • These findings enhance our understanding of the neurophysiological basis of working memory.
  • The results suggest potential clinical implications for conditions characterized by altered cortical excitability.