Hello all,

On page 2 of the paper 'Distinct patterns of brain activity in young carriers of the APOE-


4 allele' (Filippini et all 2009), in the resting state results section, they claim "head of the hippocampus and amygdala; degree of coactivation increased by a factor of 5.3 (left) and 3.7 (right)". They used "the regression coefficient as part of the ‘‘dual-regression’’ approach" to obtain these values.

Does anyone know how to obtain these values? I've used dual regression on a data set, and obtained statistically significant voxels. It would be nice to know 'how much more active' these voxels are.

Thanks.

Ahmad Saeed Rajab, BMath.
Candidate for Master of Science, Medical Biophysics
University of Toronto, Toronto, Ontario

Sunnybrook Health Sciences Centre
2075 Bayview Avenue
Toronto, ON, M4N 3M5