7/2/2004 SSCC/NIMH 2
Geometry and Topology
¥Geometry: Spatial location
ÐX,Y,Z coordinates of brain structures

¥Topology: Spatial connectivity
ÐRelative positions of brain structures along the surface
¥Geometric proximity does not imply topological proximity
ÐIf you care about the topology of activation, you should transfer FMRI data onto the surface before spatial manipulations of the data