open-discussion
open-discussion > RE: HELP! ROI analysis
Jan 24, 2013 05:01 PM | Qingyang Li
RE: HELP! ROI analysis
Hi Yellz,
just what to clarify something first:
1. The two ROIs, are they in different size?
2. The activated regions related to amygdala ROI, are they mostly in limbic regions?
If the answer to the first one is yes, then it might be a SNR issue. including time series from more voxels in the bigger ROI might diffuse the signal in amyg. thus you cannot see the same/similar activation pattern which were shown when you use smaller ROI. this is just my guess though...
The answer to question 2 might confirm or reject my guessing.
Yang
just what to clarify something first:
1. The two ROIs, are they in different size?
2. The activated regions related to amygdala ROI, are they mostly in limbic regions?
If the answer to the first one is yes, then it might be a SNR issue. including time series from more voxels in the bigger ROI might diffuse the signal in amyg. thus you cannot see the same/similar activation pattern which were shown when you use smaller ROI. this is just my guess though...
The answer to question 2 might confirm or reject my guessing.
Yang
Threaded View
| Title | Author | Date |
|---|---|---|
| yeliz kahraman | Jan 24, 2013 | |
| Qingyang Li | Jan 24, 2013 | |
| yeliz kahraman | Jan 25, 2013 | |
| Ben Turner | Jan 25, 2013 | |
| Ben Turner | Jan 24, 2013 | |
| yeliz kahraman | Jan 25, 2013 | |