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Oscillatory Correlates of Visual Consciousness
Stefano Gallotto1,2, Alexander T Sack1,2, Teresa Schuhmann1,2
1Department of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht UniversityMaastricht, Netherlands.
Frontiers in Psychology
|July 25, 2017
Summary
Neural correlates of consciousness (NCCs) research explores brain activity. This review focuses on brain oscillations, like alpha-band activity, potentially supporting conscious perception, while noting challenges in distinguishing prerequisites from substrates.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- Conscious experiences are fundamentally linked to brain activity, forming the basis of neural correlates of consciousness (NCCs) research.
- NCC research employs diverse methodologies to investigate brain signals, measures, and activity patterns.
Purpose of the Study:
- To review oscillatory measures correlating with conscious perception.
- To discuss techniques for studying the causal role of brain oscillations in consciousness (entrainment).
Main Methods:
- Review of empirical research on spontaneous brain oscillations.
- Analysis of oscillatory parameters like frequency, amplitude, and phase.
- Examination of methods for assessing causal relationships in NCC research.
Main Results:
- Oscillatory activity, particularly in the alpha-band (7-13 Hz), shows correlation with conscious perception.
- Brain oscillations may index or causally support conscious experiences.
- Sophisticated techniques are emerging to investigate the causal role of oscillations.
Conclusions:
- Brain oscillations are significant indicators within NCC research.
- Distinguishing neural prerequisites, substrates, and consequences of consciousness remains a key challenge.
- Alpha-band oscillations present a promising area for understanding the neural basis of consciousness.
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