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
Small
amount of geometric distortion-No respect for topology of activation
ÐSpherical coordinate system for surface-based analysis
+Preserves
the topology of activation
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