[FieldTrip] actvsblT and average over time and/or frequency
akiko.ikkai at gmail.com
Tue Aug 14 22:19:13 CEST 2012
I'm testing for the power difference between baseline (fixation) and memory
delay periods, following the examples in "Permutation Tests > Within trial
experiments" tutorial. When I set
cfg.statistic = 'actvsblT';
cfg.avgovertime = 'yes';
cfg.avgoverfreq = 'yes';
then run ft_freqstatistics, I get an error in statfun_actvsblT.m,
"Inappropriate dimord for the statistics function STATFUN_ACTVSBLT.". This
is because with avgovertime and/or avgoverfreq set to 'yes', cfg.dimord for
data input to statfun_actvsblT is simply "chan," whereas statfun_actvsblT
requires "chan_freq_time." When I comment out cfg.avgovertime AND freq,
permutation runs fine. This is particular to statfun_actvsblT; other
functions, such as statfun_depsamplesT, do not have this dimord structure
I'm puzzled why averaging over time and/or frequency could not be a valid
option for actvsblT... could someone help me understand?
Akiko Ikkai, Ph.D.
Department of Psychological and Brain Sciences
Johns Hopkins University
Ames Hall, 3400 N. Charles St.
Baltimore, MD 21218
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the fieldtrip