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Related Experiment Video

Updated: May 19, 2026

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Published on: August 11, 2019

Hypotheses relating to the function of the claustrum.

John Smythies¹, Lawrence Edelstein, Vilayanur Ramachandran

¹Center for Brain and Cognition, University of California San Diego, La Jolla CA, USA.

Frontiers in Integrative Neuroscience

|August 10, 2012

Summary

The claustrum detects and integrates neural synchrony, modulating brain activity for perception, cognition, and voluntary behavior. This new hypothesis suggests its role in consciousness and interactive brain processes.

Keywords:

GABAergic interneurons binding claustrum consciousness oscillations salience synchrony

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Area of Science:

Neuroscience
Computational Neuroscience
Systems Neuroscience

Background:

The claustrum's precise function remains elusive.
Existing hypotheses lack comprehensive integration of its widespread connectivity.
Understanding the claustrum is key to deciphering complex brain operations.

Purpose of the Study:

To propose a novel hypothesis for the claustrum's function.
To elucidate the claustrum's role in detecting and integrating neural synchrony.
To explore the claustrum's contribution to cognitive processes and consciousness.

Main Methods:

Theoretical modeling of neural signal processing.
Hypothesis formulation based on existing neurophysiological data.
Consideration of neurochemical (GABAergic) and plasticity mechanisms.

Main Results:

The claustrum acts as a synchrony detector and integrator for afferent axonal inputs.
It processes inputs via competitive intraclaustral oscillations.
Modulates synchronized outputs to cortical and subcortical structures, including the motor cortex.

Conclusions:

The claustrum potentiates intracortical synchronizations through reverberating claustro-cortical loops.
It plays a significant role in controlling interactive brain processes and voluntary behavior.
This mechanism may underlie the neural correlates of consciousness.