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Updated: Jan 23, 2026
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Maturation of Human Stem Cell-derived Cardiomyocytes in Biowires Using Electrical Stimulation
Published on: May 6, 2017
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Electrical stimulation of the human claustrum.
Stephan Bickel1, Josef Parvizi1
1Laboratory of Behavioral and Cognitive Neuroscience, Stanford Human Intracranial Cognitive Electrophysiology Program, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA 94305, United States of America.
Epilepsy & Behavior : E&B
|June 15, 2019
Summary
Electrical stimulation of the human claustrum (a brain structure) caused sensory experiences and movements but did not affect consciousness or awareness. This study provides new causal insights into the claustrum's role in subjective experience.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Human Subjective Experience
Background:
- The claustrum's precise function in human subjective experience remains poorly understood.
- Previous research has primarily relied on correlational or lesion studies.
Purpose of the Study:
- To investigate the causal role of the human claustrum in subjective experience.
- To determine if direct electrical stimulation of the claustrum influences consciousness and awareness.
Main Methods:
- Direct electrical stimulation of the human claustrum using intracranial electrodes in five neurosurgical patients.
- Recording of subjective reports and observation of reflexive movements following stimulation.
- Comparison between real and sham stimulation conditions.
Main Results:
- Real, but not sham, stimulations elicited subjective experiences across sensory domains and induced reflexive movements.
- No stimulation, even strong bilateral pulses, resulted in loss of consciousness or subjective awareness.
- This marks the first study to directly perturb the human claustrum electrically.
Conclusions:
- The human claustrum appears causally involved in generating specific subjective experiences and reflexive behaviors.
- The claustrum is not essential for maintaining overall consciousness or subjective awareness.
- Direct electrical stimulation provides novel causal insights into claustrum function.
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