Vector-valued ClusterStats

[Allen Ardestani]

Hi,

I've already looked at the 2007 JMN paper by Maris and Oostenveld, but still
have some remaining questions about using a vector-valued test statistic to
assess differences between 2 conditions (correct vs incorrect memory task
performance).  I've attached a cluster map showing the many different sizes
and shapes that make it necessary to use a vector-valued test statistic.

1)      Do the existing FT functions handle vector-valued stats?

2)      Are all ClusterStats from each permutation (bigger than a minimum
size) included when constructing a multivariate permutation distribution?

3)      Are clusters of all sizes compared to the same permutation
distribution?  I.e.,  would the 3rd largest cluster be compared to a
permutation distribution obtained from just the 3rd largest stat from each
permutation?

4)      Our trials each have a baseline period - in order to assess the
differences between the two conditions, should we limit the permutation
distribution to stats selected just from the active periods of each
permutation?



Thank you very much in advance!



____________________________________________________________________________
______

Allen Ardestani    Email: aardesta at ucla.edu

Phone: (310) 825-5528

Medical Scientist Training Program

David Geffen School of Medicine at UCLA

Semel Institute for Neuroscience and Human Behavior

760 Westwood Plaza

Los Angeles, CA 90095-1759

USA




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