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The Representational Basis of Working Memory.

Derek Evan Nee1, Mark D'Esposito2

  • 1Department of Psychology, Florida State University, 1107 W Call St, Tallahassee, FL, 32306-4301, USA. nee@psy.fsu.edu.

Current Topics in Behavioral Neurosciences
|September 29, 2016
PubMed
Summary
This summary is machine-generated.

Working memory relies on both prefrontal cortex (PFC) and sensory cortices. Processing demands determine their relative contributions, with complex tasks highlighting the PFC's crucial role in higher cognition.

Keywords:
AbstractionMultivariate pattern analysisPrefrontal cortexShort-term memory

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Cognitive Neuroscience

Background:

  • Working memory is crucial for higher-level cognition.
  • Neuroscience studies have investigated the neural basis of working memory.
  • Conflicting viewpoints exist regarding the roles of the prefrontal cortex (PFC) and posterior sensory cortices.

Purpose of the Study:

  • To review evidence for the roles of the PFC and sensory cortices in working memory.
  • To propose a framework for understanding the relative contributions of these brain regions based on processing demands.
  • To emphasize the critical role of the PFC in working memory and general cognition.

Main Methods:

  • Literature review of neuroscience studies on working memory.
  • Analysis of evidence supporting the PFC-centric view.
  • Analysis of evidence supporting the sensory cortex-centric view.

Main Results:

  • Working memory's neural basis involves both PFC and sensory cortices.
  • Minimizing processing demands emphasizes sensory representations.
  • Transformational processing and representational abstraction rely on the PFC.
  • PFC supports top-down control and bottom-up processing for cognition.

Conclusions:

  • The relative contributions of PFC and sensory cortices to working memory depend on processing demands.
  • Abstract PFC representations are vital for complex cognitive functions.
  • Understanding the PFC is critical for a comprehensive view of working memory and higher cognition.