Hello, I am a new caret user and am experiencing some difficulty with properly generating/viewing the metric file of my fMRI data. I am not sure whether I am just not creating the metric file correctly or whether I am just not opening the right file. I have followed the steps in the tutorial as carefully as I could, but am still having problems. Following is an outline of the specific steps I've taken:
1. Opening a spec file, Human.PALS_B12.B1-12.DEPTH_ANALYSES_LEFT.73730.spec 2. Choosing "Select All" and Loading 3. Selecting the Left Inflated view from the "Model" scroll-down bar 4. Clicking on "Attributes", "Map Volumes to Surfaces" 5. Selecting "Metric (Functional) or Surface Shape Data" 6. Checking "Enable Entry of Volume Threshold", clicking "Add Volumes from Disk...", and entering my the values for my volume thesholding 7. In the path, selecting the thresholded volume file (file type = nii.gz) from my data 8. Next, selecting "Map to Spec File with Atlas" 9. Opening Human.PALS_B12.B1-12.DEPTH_ANALYSES_LEFT.73730.spec as my Output Spec File 10. In my Mapping Atlas, choosing the Space FLIRT and the Left Hemisphere as my Atlas 11. Renaming my data_file.metric without changing any of my Data Column Names 12. Selecting Metric_Enclosing_Voxel, "Finishing", then closing I then go to "Spec", select the "Metric" tab, and under "Metric Files" open my data_file.metric, and select OK to "Append". Finally, I go to "D/C", and in the "Overlay/Underlay-Surface" option in "Page Selection", I choose "Metric" as my Data Type. In "Metric Settings", I choose "User Scale" and specify the threshold values I used for my data. At this point, I do see activation in the spec file uploaded into the caret window. However, my problem is that I get this same pattern of activation for any and every volume that I upload from my data. I don't understand why. I am sorry for the level of detail in this email, but I am not sure which step I am missing or doing incorrectly. I would greatly appreciate it if someone could please help me with this problem. Thanks very much, Angeline --
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