7/2/2004 SSCC/NIMH 3
Group analysis
¥Group analysis requires data defined over a
domain common to all subjects
ÐTalairach space for volume-based analysis
+ Small amount of geometric distortion
-No respect for topology of activation
ÐSpherical coordinate system for surface-based analysis
+ Preserves the topology of activation
-Considerable geometric distortion
¥Preserving the topology of activation is Good in general and crucial for
ÐRetinotopy
ÐPlasticity
ÐHigh-resolution Mapping
