Note that this reference documentation is identical to the help that is displayed in Matlab when you type “help statfun_pooledT”.
STATFUN_pooledT computes the pooled t-value over a number of
replications. The idea is that you compute a contrast between two
conditions per subject The t-values are pooled over subjects and
compared against the pooled pseudo-values. Since according to H0
the expected t-value for each subject value is zero, the difference
between the pooled t-value and the pseudo-value (which is set to
zero) is a fixed-effects statistic.
The computation of the difference between pooled t-values can be
repeated after randomly permuting the t-values and pseudo-values
within the subjects. Each random permutation gives you an estimate
of the difference. The random permutations build up a randomization
distributin, against which you can compare the observed pooled
t-values.
The statistical inference based on the comparison of the observed
pooled t-values with the randomization distribution is not a
fixed-effect statistic, one or a few outlier will cause the
randomization distribution to broaden and result in the conclusion
of "not significant".
Use this function by calling one of the high-level statistics
functions as
[stat] = ft_timelockstatistics(cfg, timelock1, timelock2, ...)
[stat] = ft_freqstatistics(cfg, freq1, freq2, ...)
[stat] = ft_sourcestatistics(cfg, source1, source2, ...)
with the following configuration option:
cfg.statistic = 'pooledT'
Configuration options that are relevant for this function are
cfg.ivar = number, index into the design matrix with the independent variable
See FT_TIMELOCKSTATISTICS, FT_FREQSTATISTICS or FT_SOURCESTATISTICS
for details.
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