A functional magnetic resonance imaging investigation of visual hallucinations in the human striate cortex

Table 4 Size of clusters, cluster means and within sum of squares

No. of cluster	Cluster size	Cluster means			Within sum of squares
No. of cluster	Cluster size	BA 17	BA 18	BA 19	Within sum of squares
1	82	464.2945	370.8899	519.8890	7605.788
2	80	627.4581	496.4402	694.6261	12,436.723
3	80	488.8951	374.0905	524.2706	7108.980
4	78	457.0710	357.5852	495.6686	5530.045