Related Experiment Video
Updated: Jul 20, 2026
09:36
Extracting Visual Evoked Potentials from EEG Data Recorded During fMRI-guided Transcranial Magnetic Stimulation
Published on: May 13, 2014
Predicting the stream of consciousness from activity in human visual cortex
John-Dylan Haynes1, Geraint Rees
1Wellcome Department of Imaging Neuroscience, Institute of Neurology, University College London, 12 Queen Square, London WC1N 3BG, United Kingdom. haynes@fil.ion.ucl.ac.uk
Current Biology : CB
|July 30, 2005
Summary
Researchers successfully predicted conscious experience solely from brain activity using functional magnetic resonance imaging (fMRI). This breakthrough tracks spontaneous changes in subjective perception, advancing our understanding of consciousness.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychology
Background:
- Previous studies predicted static perceptual states from visual cortex activity.
- It was unclear if brain activity could predict rapidly changing conscious experience.
Purpose of the Study:
- To determine if brain activity alone can predict the dynamic stream of consciousness.
- To investigate the role of early visual cortex in tracking subjective experience.
Main Methods:
- Used binocular rivalry to induce spontaneous changes in conscious experience.
- Measured brain activity using functional magnetic resonance imaging (fMRI).
- Applied multivariate pattern analysis to fMRI signals.
Main Results:
- Accurately predicted and tracked participants' conscious experience from fMRI data.
- Prediction generalized across viewing conditions and did not require motor responses.
- Primary visual cortex signals reflected eye-based information, while higher areas reflected perceived color.
Conclusions:
- Subjective experience can be predicted from brain activity alone.
- fMRI signals can track the dynamically changing time course of consciousness.
- This opens new avenues for understanding the neural basis of subjective perception.
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