The leading theory of consciousness was just called “pseudoscience” by 100 neuroscientists

Giulio Tononi (left) and Christof Koch share more than their appearance. Tononi is the creator of the Integrated Information Theory and Koch a contributor and likely the most prominent promoter. IIT is often referred to as the most likely candidate to explain how matter produces consciousness. Claims of IIT researchers at a June conference served as the basis for 100 neuroscientist to call the idea “pseudoscience.”

Claims of experimental validation of Integrated Information Theory (IIT) were rejected in a letter signed by 100 neuroscientists.

One scientist calling another’s findings “pseudoscience” is almost the ultimate insult. It surpasses even Wolfgang Pauli’s acerbic dismissal of ideas he rejected. He said they were “not even wrong.” But when 100 prominent neuroscientists declare the most popular theory of consciousness pseudoscience, you know something is up in the air. It seems Giulio Tononi and Christof Koch just got the big middle finger wave.

The story came out on September 20 in this New Scientist post. It seems that a presentation on IIT at the June meeting of the Association for the Scientific Study of Consciousness triggered a rather vigorous response. According to the post:

“IIT predicts that it is theoretically possible to calculate a value for the level of consciousness, termed phi, of any network with known structure and functioning. But as the number of nodes within a network grows, the sums involved get exponentially bigger, meaning that it is practically impossible to calculate phi for the human brain — or indeed any information-processing network with more than about 10 nodes.”