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Working memory by distributed neural oscillators in a simple nervous system
Raymond L Dunn1, Caitriona Costello1, Jackson M Borchardt1
1Weill Institute of Neurosciences, University of California San Francisco; San Francisco, CA, USA.
Biorxiv : the Preprint Server for Biology
|August 16, 2024
Summary
This study reveals a working memory in C. elegans essential for decision-making, enabling deferred actions during navigation. This memory relies on interacting brain oscillations, suggesting a primitive cognitive mechanism.
Area of Science:
- Neuroscience
- Animal Behavior
- Cognitive Science
Background:
- The nematode C. elegans exhibits complex navigation behaviors.
- Understanding the neural basis of decision-making and memory in simple organisms is crucial.
Purpose of the Study:
- To investigate the existence and function of a working memory system in C. elegans.
- To elucidate the neural mechanisms underlying sensory-guided decision-making and deferred action.
Main Methods:
- Behavioral analysis of C. elegans navigation and reorientation.
- Investigating the role of sensory input in guiding turn direction.
- Modeling the neural dynamics underlying memory persistence.
Main Results:
- A working memory system was identified in C. elegans for deferred action.
- Turn direction during navigation is controlled by sensory input and working memory.
- This memory persists through intervening behavioral sequences.
- The system involves the phasic interaction of two distributed oscillatory dynamical components.
Conclusions:
- C. elegans possesses a working memory system crucial for complex navigation and decision-making.
- The interaction of oscillatory neural ensembles may represent a fundamental cognitive mechanism conserved across species.
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