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Neural representation and the cortical code.

R C deCharms¹, A Zador

¹Keck Center for Integrative Neuroscience, University of California, San Francisco 94143-0732, USA. decharms@keck.ucsf.edu

Annual Review of Neuroscience

|June 9, 2000

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The central nervous system represents information using neuronal firing rates and temporal patterns. Understanding this neural code is key to explaining how the cerebral cortex mediates behavior and subjective experience.

Area of Science:

Neuroscience
Computational Neuroscience
Cognitive Neuroscience

Background:

The central nervous system's primary role is information processing for decision-making and behavior.
The cerebral cortex is crucial for internal representations underlying perception, memory, and consciousness.
The neural coding principles within the cerebral cortex remain incompletely understood.

Purpose of the Study:

To define and review how information is represented by cortical neurons.
To emphasize the role of neural coding in mediating behavior and experience.

Main Methods:

Review of existing literature on neural coding in the cerebral cortex.
Analysis of information representation through neuronal firing rates.
Examination of temporal patterns in neuronal activity.

Related Experiment Videos

Main Results:

Information is encoded in both the firing rates and precise timing of neuronal action potentials.
Population-level activity patterns are critical for complex information processing.
Neural coding strategies are directly linked to behavioral outputs and subjective states.

Conclusions:

Neuronal firing rates and temporal dynamics are fundamental to cortical information representation.
Understanding these coding schemes is essential for deciphering brain function in perception, memory, and decision-making.
This neural code provides a framework for understanding the link between brain activity and conscious experience.