The dynamic causality brain network reflects whether the working memory is solidified
Chunli Chen1,2, Yi Liang3,4, Shiyun Xu1,2
1MOE Key Lab for Neuroinformation, The Clinical Hospital of Chengdu Brain Science Institute, University of Electronic Science and Technology of China, Chengdu 611731, China.
Cerebral Cortex (New York, N.Y. : 1991)
|December 7, 2023
Summary
Successful working memory relies on dynamic brain network connections. Enhanced cognitive function involves shifting causal brain activity from frontal-temporal to frontal-central regions during memory tasks.
Area of Science:
- Neuroscience
- Cognitive Science
- Brain Network Analysis
Background:
- Working memory is crucial for cognitive control and goal-directed behavior.
- Understanding the dynamic causal interactions in the brain supporting working memory is limited.
- Thought control is a key component of successful working memory.
Purpose of the Study:
- To investigate the dynamic causal relationships among brain regions during successful working memory.
- To identify the network connectivity patterns underlying thought control in working memory.
Main Methods:
- High-temporal-resolution electroencephalography (EEG) was used for time-varying directed network analysis.
- Analysis focused on connectivity between frontal, temporal, occipital, and central brain regions.
- Behavioral accuracy was correlated with network metrics over time.
Main Results:
- Successful working memory depended on strong top-down (frontal-temporal) and bottom-up (occipital-temporal) connections early in maintenance.
- Later in the delay period, top-down frontal-central connections became important.
- Behavioral performance correlated with causal network interactions, which increased over time.
Conclusions:
- Accurate working memory relies on dynamic switching of causal network connections.
- Shifting to task-relevant network patterns is essential for memory performance.
- Interventions targeting these dynamic network shifts may enhance memory.
Keywords:
alpha suppressioncontralateral delay activitydynamic causalitytime-varying directed network analysisworking memoryMore Related Videos
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