Giulio Tononi (Italian: [ˈdʒuːljo toˈnoːni]) is a neuroscientist and psychiatrist who holds the David P. White Chair in Sleep Medicine, as well as a Distinguished Chair in Consciousness Science, at the University of Wisconsin.

in psychiatry and a Ph.D. in neurobiology at the Sant'Anna School of Advanced Studies in Pisa, Italy.

[10] Tononi is a leader in the field of consciousness studies,[11] and has co-authored a book on the subject with Nobel prize winner Gerald Edelman.

The theory is being tested with neuroimaging, Transcranial magnetic stimulation (TMS), and computer models.

[14] His work has been described as "the only really promising fundamental theory of consciousness" by collaborator Christof Koch.