reviewTrends in Cognitive SciencesJun 5, 2015HYBRID OA

‘Activity-silent’ working memory in prefrontal cortex: a dynamic coding framework

MGMark G. Stokes

University of Oxford · Wellcome Centre for Integrative Neuroimaging

PubMed
Indexed incrossrefpubmed

Abstract

Working memory (WM) provides the functional backbone to high-level cognition. Maintenance in WM is often assumed to depend on the stationary persistence of neural activity patterns that represent memory content. However, accumulating evidence suggests that persistent delay activity does not always accompany WM maintenance but instead seems to wax and wane as a function of the current task relevance of memoranda. Furthermore, new methods for measuring and analysing population-level patterns show that activity states are highly dynamic. At first glance, these dynamics seem at odds with the very nature of WM. How can we keep a stable thought in mind while brain activity is constantly changing? This review…

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Topics & keywords

Topics
Keywords
  • Psychology
  • Prefrontal cortex
  • Working memory
  • Neuroscience
  • Coding (social sciences)
  • Cognitive psychology
  • Interference theory
  • Cognitive science
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