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Updated: Jul 4, 2025
09:05
Assessing Working Memory in Children: The Comprehensive Assessment Battery for Children – Working Memory (CABC-WM)
Published on: June 12, 2017
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Alpha phase-coding supports feature binding during working memory maintenance
Biorxiv : the Preprint Server for Biology
|February 8, 2024
Summary
Neural phase synchrony enables feature binding in working memory (WM). Swap errors in WM occur due to disruptions in this synchrony, revealing cognitive capacity limits.
Area of Science:
- Cognitive Neuroscience
- Neuroscience
Background:
- Working memory (WM) relies on binding object features into unified representations.
- The neural mechanisms underlying feature binding and the cause of binding (or swap) errors remain poorly understood.
- Binding errors in WM highlight cognitive capacity limitations.
Purpose of the Study:
- To investigate the role of neural phase synchrony in working memory feature binding.
- To test if disruptions in neural synchrony cause binding (swap) errors.
- To elucidate the neural dynamics underlying working memory capacity limits.
Main Methods:
- Magnetoencephalography (MEG) was used to record brain activity in human subjects.
- A task was designed to specifically induce feature binding errors in working memory.
- Analysis focused on phase-locked oscillatory activity and phase-coding variability during memory retention.
Main Results:
- Swap errors in WM were associated with reduced phase-locked oscillatory activity during memory retention.
- This reduction in synchrony aligns with predictions from attractor models of neural networks.
- Increased phase-coding variability in the alpha-band over sensorimotor areas characterized binding errors.
Conclusions:
- Neural phase synchrony is crucial for feature binding in working memory.
- Disruptions in phase synchrony, specifically increased alpha-band phase-coding variability, underlie WM swap errors.
- Feature binding in WM emerges from phase-coding dynamics driven by neural competition.
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