Detecting Functionally Coherent Networks in fMRI Data of the Human Brain Using Replicator Dynamics

• Authors: Gabriele Lohmann;D. Yves von Cramon
• Venue: IPMI '01 Proceedings of the 17th International Conference on Information Processing in Medical Imaging
• Year: 2001

We present a new approach to detecting functional networks in fMRI time series data. Functional networks as defined here are characterized by a tight coherence criterion where every network member is closely connected to every other member. This definition of a network closely resembles that of a clique in a graph. We propose to use replicator dynamics for detecting such networks. Our approach differs from standard clustering algorithms in that the entities that are targeted here differ from the traditional cluster concept.