Hi, Friends:
I have studied several groups subjects over the last several years.
The tasks include N-Back working memory task, Stroop color-word task,
and other attention tasks. I always find about 15~20% of healthy
subjects did not show significant task related changes in BOLD signal,
though they performed task well, and did not show excessive motion
during scan. I'm wondering if any one else here also have similar
findings and can make some comments.
Best
Jiasnong
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