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Transfer after Dual n-Back Training Depends on Striatal Activation Change.

Tiina Salminen1, Simone Kühn2, Peter A Frensch3

  • 1Humboldt-Universität zu Berlin, Faculty of Life Sciences, Department of Psychology, 12489 Berlin, Germany, tiina.salminen@hu-berlin.de.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|September 30, 2016
PubMed
Summary
This summary is machine-generated.

Dual n-back working memory (WM) training enhances specific WM updating processes, not general cognitive resources. This leads to narrow transfer effects, with increased striatal activation linked to behavioral improvements.

Keywords:
dual n-backfMRItrainingtransferworking memory

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Area of Science:

  • Cognitive Neuroscience
  • Neuroscience
  • Psychology

Background:

  • Working memory (WM) training, particularly dual n-back, is studied for its transfer effects.
  • The dual n-back task involves auditory and visual stimuli, demanding significant cognitive resources.
  • Previous research suggests widespread transfer, but the underlying mechanisms remain debated.

Purpose of the Study:

  • To investigate whether dual n-back training improves general cognitive resources or task-specific WM updating.
  • To examine the neural correlates of training-induced changes in WM.
  • To determine the extent and nature of transfer effects following dual n-back training.

Main Methods:

  • Participants underwent dual n-back training (auditory and visual stimuli).
  • Cognitive performance was assessed using various WM tasks (dual-modality, single-modality).
  • Neuroimaging (fMRI) was used to analyze brain activation patterns before and after training.

Main Results:

  • The training group showed transfer to a dual-modality WM updating task, but not single-task versions.
  • Neuronal overlap between training and transfer tasks decreased post-training.
  • Increased striatal activation was observed in both tasks, correlating with behavioral improvements.

Conclusions:

  • Dual n-back training specifically enhances WM updating processes, rather than general cognitive abilities.
  • Transfer effects are narrow, benefiting tasks that rely on similar WM updating mechanisms.
  • Striatal activation is a key neural marker for WM updating improvements induced by dual n-back training.