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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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Traveling waves link human visual and frontal cortex during working memory-guided behavior.

Canhuang Luo1,2, Edward F Ester2

  • 1School of Psychology, Shenzhen University, Shenzhen 518060, China.

Proceedings of the National Academy of Sciences of the United States of America
|July 23, 2025
PubMed
Summary
This summary is machine-generated.

Traveling brain waves coordinate neural activity for memory-guided actions. These brain waves, identified using EEG, predict performance and are crucial for initiating memory-guided behaviors.

Keywords:
EEGmotor controltraveling wavesworking memory

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Computational Neuroscience

Background:

  • Traveling brain waves are fundamental to neural communication and information processing.
  • Their role in flexibly organizing brain region interactions for memory-guided behaviors remains unclear.

Purpose of the Study:

  • To investigate the role of traveling brain waves in the initiation and control of short-term memory-guided behaviors.
  • To determine if traveling waves between visual and motor areas predict task performance.

Main Methods:

  • Analysis of human electroencephalography (EEG) data during a short-term memory task.
  • Identification and characterization of forward- and backward-propagating traveling waves.
  • Statistical analyses to correlate wave properties with task performance and rule out alternative explanations (e.g., eye movements).

Main Results:

  • Forward- and backward-propagating traveling waves were observed linking visual and motor brain areas during memory-guided behavior.
  • The presence and characteristics of these waves predicted individual differences in task performance.
  • Traveling waves were absent when behavior was planned but not executed, and were not explained by eye movements or volume conduction.

Conclusions:

  • Traveling brain waves are implicated as a key neural mechanism for initiating and controlling memory-guided behaviors.
  • These waves dynamically coordinate activity between memory storage and behavioral output regions.
  • The findings provide novel insights into the neural basis of cognitive control and action planning.