Glossary

Integrated Information Theory

Integrated Information Theory is a theory suggesting that consciousness corresponds to the degree to which a system integrates information into a unified whole.

Overview

Integrated Information Theory, often associated with Giulio Tononi, proposes that consciousness depends not only on information processing but on how unified and irreducible that information is within a system. The theory attempts to explain why some systems may have richer conscious states than others. It is one of the most discussed scientific theories in consciousness studies.

Key Insight

A system may be conscious to the extent that its information is integrated into a single unified structure.

Scientific Status

Integrated Information Theory is influential and widely discussed, but also controversial. Critics question how well it maps onto empirical evidence and whether its claims can be fully tested.

How Researchers Study It

Researchers explore it through theoretical modelling, neuroimaging, complexity measures, and analysis of conscious and unconscious states.

Quick Facts

Field
consciousness studies, neuroscience
Related Concepts
global workspace theory, binding problem, emergence
Typical Context
unified experience, brain complexity

Related Terms

FAQ

  • What does IIT try to explain?

    It tries to explain why consciousness feels unified and how conscious level might vary across systems.

  • Is IIT accepted by everyone?

    No. It is influential, but many researchers disagree about its assumptions and implications.