Figure 7.

Metabolic lesion-deficit clinical prediction of WAIS-verbal IQ and depression. Penalized Bayesian multiple regression was used to predict WAIS verbal IQ (VIQ) and depression (HADS) reasonably well from ¹⁸F-FDG PET data. Although the model is evaluated in terms of predictive accuracy, it is interesting to compare the support for these multivariate predictions—the weighting of each voxel in the model—with the weightings assigned in the univariate case. Multivariate weightings (right) presented as the t-statistic are broadly similar to the univariate weightings (left, reproduced from Figs 3 and 5), providing further support that the univariate maps represent genuine, undistorted structure-function maps.