How Scientists Test for Integrated Information Without Asking

Three experimental approaches researchers use to measure whether a system truly works as one unified whole, the core requirement for consciousness in IIT.

Bar chart showing four integration measures across different consciousness states. All measures show high scores for awake humans (85-95), dramatic drops during deep sleep (25-40) and anesthesia (15-25), with current AI systems showing intermediate scores (35-45).
Scores represent how much the system shows unified, integrated responses (0-100 scale). Perturbation Response: How widely and richly a small input spreads through the system. Feedback Load Task: Performance difference between integrated vs modular tasks. Link Disruption: How much breaking connections affects overall system function. Shows clear drop in integration during unconscious states.
Chart: Measurement approaches for consciousness research based on IIT predictionsSource: Experimental paradigms from Tononi, Casali, and Massimini research groupsGet the dataCreated with Datawrapper