Testing consciousness theories
Use a preregistered adversarial collaboration to examine predictions without declaring a universal winner.
The question
Which neural predictions distinguish theories of conscious visual experience?
The 2025 COGITATE collaboration tested agreed predictions from integrated information theory and global neuronal workspace theory. Theories outside that pair remain relevant.
What the claims mean
Integrated information predictions
The collaboration tested predictions about posterior cortical representations and sustained synchronization associated with conscious content.
Global workspace predictions
It also tested predictions about prefrontal representation and ignition around changes in conscious content. These are specific operational predictions, not every possible version of the theory.
Evidence to examine
The COGITATE Consortium (2025) studied 256 participants viewing visible stimuli with fMRI, MEG and intracranial EEG. Some findings aligned with predictions from each framework. Absent sustained posterior synchronization challenged IIT; absent ignition at stimulus offset and limited representation of certain conscious dimensions in prefrontal cortex challenged GNWT.
Shared ground and disagreement
What the accounts can share
Comparisons are more informative when proponents agree in advance on predictions, measurements and interpretations. Neural correlations require careful separation from prerequisites and consequences of experience.
What remains at issue
How these results should revise each framework, which neural signatures are necessary rather than incidental, and how visual findings extend to other experiences.
Limits and next tests
This study does not solve every philosophical problem of consciousness or establish a clinical test for every patient. A failed operational prediction need not refute every claim in a broad framework.
What would help distinguish the claims?
Develop quantitative predictions that distinguish revised models, replicate across measures and vary reporting demands. Agree on which results would require a substantive theoretical revision.
Textbook connection
ContextualOpenStax Psychology 2e: 4.1 What Is Consciousness?
The section provides background vocabulary. It does not cover the full debate or establish the status of later research.
Sources and access
- Ferrante, O., Gorska-Klimowska, U., Henin, S., Hirschhorn, R., Khalaf, A., Lepauvre, A., Liu, L., Richter, D., Vidal, Y., Bonacchi, N., Brown, T., Sripad, P., Armendariz, M., Bendtz, K., Ghafari, T., Hetenyi, D., Jeschke, J., Kozma, C., … Melloni, L. (2025). Adversarial testing of global neuronal workspace and integrated information theories of consciousness. Nature, 642(8066), 133–142. https://doi.org/10.1038/s41586-025-08888-1Consulted sourceFull text sections inspected
Publisher abstract, main design and discussion inspected. Supplementary files not audited. Visible stimuli and agreed IIT/GNWT predictions, not all forms of experience.