New paper on Distributional Properties of BOLD Susceptibility effects in the Brain

[Stephen J. Hanson]

New paper available:

"The Distribution of BOLD Susceptibility effects in the Brain is 
Non-Gaussian",   

S.J Hanson & B. Martin Bly
to appear --NeuroReport  (July, 2001).


Abstract:

A key assumption underlying fMRI analysis in the General Linear Model
is that the underlying distributions of BOLD susceptibility is
Gaussian.  Analysis of several common data sets and experimental
paradigms shows that the underlying distribution is NON-Gaussian.
Further identification shows that the distribution is most likely
GAMMA and implications for hehmodynamic modeling are discussed as well
as recommendations concerning inferential testing in such
"heavy-tailed" environments.


PDF--> http://psychology.rutgers.edu/Users/jose/index.html


Steve
also see RUMBA-->   www.rumba.rutgers.edu