Dear EEGLab users,
<br> Somehow my last post doesn't seem to go through, so I am trying to post it again, I apologize if it's a duplicate. I have a few questions about the option 'signifs' and 'sigthresh' in
the function "tftopo".
<br> 1. As far as I understand from the function manual, the 'signifs' is
like a threshold for "simple effect" across electrodes/subjects, and
'sigthresh' is more like a "random effect" that you can run significance
test in a single electrode or subject level and then ask what's the
conjunction result, are my understanding on the right direction? If so,
what's a general rule to set up the threshold for 'sigthresh'?
<br>
<br> 2. in the option of 'sinifs', the matrix should either ([1|2],
freqs, chans, subjects). or [1|2], freqs,times chans, subjects), I'm a
little confused what's the [1|2] refers to?
<br>
<br> 3. Brefore using tftopo, we should first use the loop script to
calculate the Time/Freq analysis for each channel and/or subject, then
save the ERSP matrix, then run tftopo, then set the threshold using
'signifs' for simple effect, or use both 'sinifs' and 'sigthresh' to set
a threshold for random effect?
<br>
<br>I apologize that my questions are not well organized, and any input will
be very appreciated, thanks a lot~
<br>
<br>Vince<br>CCN at Duke<br>