newrb() RBF network - any preprocessing?

I'm using the newrb() function to generate radial basis function neural networks, and was expecting MATLAB to perform standardisation on the input and output data (i.e. using mapstd() to map the mean to zero and the variance to one for each feature); from what I understand of radial basis function networks, it is incredibly important to ensure that the variances of the variables are comparable in this way. However, for the networks I create, 'inputs{1}.processFcns' and 'inputs{1}.processSettings' are both empty arrays (even after configure/sim have been run). Does MATLAB perform any preprocessing, and if so, where can the preprocessing settings for the network be accessed?