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Changes in neural complexity during the perception of 3D images using random dot stereograms
Adrian P Burgess1, Joseph Rehman, John D Williams
1Department of Cognitive Neuroscience and Behaviour, Division of Neuroscience and Psychological Medicine, Faculty of Medicine, Imperial College of Science, Technology and Medicine, London W6 8RP, UK. a.burgess@imperial.ac.uk
Summary
Consciousness arises from brain connectivity, not specific parts. Neural complexity, a measure of functional connectivity, increased when participants consciously perceived a 3D image from a stereogram, supporting the dynamic core hypothesis.
Area of Science:
- Neuroscience
- Cognitive Science
- Consciousness Studies
Background:
- Consciousness is increasingly viewed as an emergent property of brain-wide neural connectivity, rather than localized brain activity.
- The dynamic core hypothesis posits that conscious experience correlates with high levels of neural complexity, defined by functional connectivity.
Purpose of the Study:
- To investigate the relationship between neural complexity and conscious perception.
- To test the dynamic core hypothesis using electroencephalography (EEG) and random dot-stereograms.
Main Methods:
- Electroencephalography (EEG) was employed to record brain activity.
- Participants viewed random dot-stereograms, which can elicit 3D visual perception.
- Neural complexity was analyzed in relation to conscious visual experience.
Main Results:
- A significant increase in neural complexity was observed during conscious perception of the 3D image compared to mere viewing.
- Findings align with the dynamic core hypothesis's prediction of increased complexity during conscious states.
Conclusions:
- Conscious perception is associated with enhanced neural complexity and dynamic functional connectivity.
- The study provides empirical support for the dynamic core hypothesis in the context of visual consciousness.