IIT Wiki

Integrated Information Theory:
Consciousness and Intrinsic Ontology

Welcome to the IIT Wiki

Integrated information theory (IIT) aims to provide a scientific account of consciousness and its place in nature. This wiki is designed to support you in learning about the IIT methodology, its mathematical formalism, and the intrinsic ontology that follows from the theory. 

If you are new to IIT, we suggest you start here and follow the sequence in the menu. The wiki pages are interlinked with one another, with a glossary, and with academic papers.

Like the theory itself, this wiki is a work in progress, and we invite you to help us improve and expand it. At the bottom of the pages, please ask questions or upvote existing questions. 

IIT has been largely developed at UW–Madison's Center for Sleep & Consciousness, which is also responsible for the content of this wiki.

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Main articles referenced throughout the Wiki

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Cite the IIT Wiki

If you wish cite the content of this wiki, we have provided citation details at the bottom of each page (or FAQ). To cite the IIT Wiki as a whole, please use the following: 

Hendren, J., Grasso, M., Juel, B. E., & Tononi, G. (2024). Integrated Information Theory Wiki (https://www.iit.wiki). Center for Sleep & Consciousness, University of Wisconsin–Madison. DOI: https://doi.org/10.5281/zenodo.14160284

Acknowledgments

The current version of the IIT Wiki was created primarily by Jeremiah Hendren, Matteo Grasso, and Bjørn Erik Juel, in close consultation with Giulio Tononi. The content builds especially on Tononi's book On Being (forthcoming) and the many theoretical and empirical IIT papers written by researchers at the UW–Madison Center for Sleep and Consciousness over the last two decades.

The IIT Wiki was made possible in part through the support of the Templeton World Charity Foundation. IIT research more generally has been supported by the Templeton World Charity Foundation, the Distinguidhed Chair in Consciousness Science at UW–Madison, the David P. White Chair in Sleep Medicine at UW–Madison, the Tiny Blue Dot Foundation, the National Institutes of Health, the Natural Science and Engineering Research Council of Canada, the Paul G. Allen Family Foundation, and the McDonnell Foundation, among others.