Hi Gang,

> First of all, 3dRegAna is not a legitimate program for this kind of analysis.

Would 3dLME be the appropriate program? Basing this on within-subjects design with covariate situation listed in 7.2.5 [afni.nimh.nih.gov] Why would 3dRegAna not be appropriate? Is it because there are 4 conditions rather than 2?

> How was the first column generated?
The first column is D', a behavioral measure of discrimination. The column is the average D' prime across subjects for each of the four conditions (hour, day, week, month).

>> we want to detect brain regions where activity changes across time periods while regressing
>> out the effects of forgetting.

> Could you elaborate what you exactly mean by this? Specifically what kind of changes across the time periods? What is "forgetting" in the context?
The effect of forgetting is captured by the decreasing D' pattern across our 4 time conditions (hour > day > week > month). We would like to generate activity maps when D' is included in the model as a covariate "of interest" and another model of brain activity when D' is included as a "nuisance" covariate.



Edited 1 time(s). Last edit at 01/22/2020 02:41PM by Catherine Tallman.