Hello,
Customarily I would like to begin with being sorry for asking
question which has high probability of being trivial to well ......
Christian Beckmann for example :-) But anyway I haven't found straight
answer for it neither on the list nor in the documentation.
Basically I would like to understand MELODIC output better. I
perform Tica analysis on my data additionally specifying both box-car
function (I use simple ABAB block design for all subjects) and between
subject contrast. In the output which I get if one clicks at the graph
representing the timecourse of the particular component one gets an array of
numbers. As I understand they represent the timecourse associated with
particular component separately for each subject (also the timecourse and
the model fit are given in first two columns). I do not understand however
what is the unit or metrics behind those numbers (I understand that they are
normalized, but normalized what?).
Similarly in "Session/Subjects mode" we get boxplot accompanied by
another plot representing, as I get it goodness of fit between particular
subject and the timecourse of the particular component. But again, how is
this synthetic measure being calculated and what does it precisely
represent?
Additionally I would like to ask if it is sound and reasonable to
import the data representing timecourses for particular subjects for
particular component (those described in second paragraph) aggregate them
for rest and active condition (that is in case of my simple ABAB design) and
perform standard GLM analysis on them (in my case I would have repeated
factor of condition 2 levels and between subjects factor of gender 2 with
levels). I'd like to do this GLM in order to get some more insight into the
between subject effects other than this synthetic measure provided in
session/subject mode and COPE estimates.
Best regards
Mike
Michal Kuniecki
Jagiellonian University
Institute of Psychology
Dpt. of Psychophysiology
ul. Ingardena 6, room 605
30-060 Krakow, Poland
|