The Bernstein Center Freiburg




Informal Seminar
Hugo Weissbart

Institut Supérieur de l’Aéronautique et de l’Espace (ISAE) - SUPAERO


Effects of psilocybin on the
Human Funtional Brain Network

For the last decade, the study of complex networks has become a new way to understand complex systems. The brain is the most complex system in nature and is perfectly fi tted to be analysed as an abstract network. Cognition and consciousness are both complex behaviours that emerge from several billions of interactions which take place in our brain. Drugs are used to probe the limit of consciousness, and in the past few years, psychedelics drugs have been revealed as a very good probe for studying the brain. The aim here is to find out how the functional network of the brain is a ected by psilocybin-the active molecule of magic mushrooms. The networks are built using MEG data recorded on patients before and after the injection of psilocybin. Several connectivity functions have been used to compute the matrix of connections which enable us to compare these methods. After a brief review of graph theory and brain networks, the methodology will be given. Finally, results show that the psychedelic state brain is much more integrated and less segregated than the resting-state brain network.

Monday, April 14, 2014

11:00 h
BCF Library
First Floor
Hansastr. 9a
The talk is open to the public. Guests are cordially invited!
www.bcf.uni-freiburg.de