[Eeglablist] comparing normal and clinical populations

[Jose Rebola]

Hi

I am running a study to investigate differences between  williams syndrome
patients and controls in a visual task. I have eight subjects of each
population.

How do I compare the amplitude of the P100 between the populations?

Should i include only one value (the peak around 100ms on each of the
subject's average) per subject ?
It seems to me that if i do this i will only have one value per subject and
i am "throwing away" the 100 trials per condition that i have

Isn't there a way that i can compare between populations while retaining
within-subject variability?
Otherwise, how does it compensate to perform 1000 trials instead of 10?

I only know how to do two-level analysis when all subjects perform two
conditions for example, thus getting one value of "effect" per subject and
moving to the next level...

Isn't there any paralle of this to two populations?

Hope somebody can help me,

José Rebola
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