Antti Revonsuo is a Finnish cognitive neuroscientist, psychologist, and philosopher of mind. His work seeks to understand consciousness as a biological phenomenon. He is one of a small number of philosophers running their own laboratories.

His work focuses on altered states of consciousness in general and dreaming in particular. He is best known for his Threat Simulation Theory, which – in the tradition of evolutionary psychology – states that dreams serve the biological function of rehearsing possibly threatening situations in order to aid survival, and his advocacy of the dreaming brain as a model of consciousness.

Main area of research
Consciousness research is a new multidisciplinary field of science that combines philosophy, psychology, and cognitive neuroscience in an attempt to understand what consciousness is, how it could be measured and studied scientifically, and what the biological and neural mechanisms underlying or enabling consciousness are. The major lines of my own research on consciousness are the following: 1) Theories of consciousness, 2) The cognitive and neural mechanisms of visual consciousness, and 3) Altered states of consciousness, in particular dreaming, hypnosis, and anesthesia.