help
help > BOLD Signal Falling to Zero: What On Earth Is Happening Here?
Jan 18, 2018 05:01 PM | thosvarley - University of Cambridge
BOLD Signal Falling to Zero: What On Earth Is Happening Here?
I'm getting a very odd result: when I plot the ROI BOLD series
after denoising, I get a very strange artifact: the BOLD signal
will sometimes simply drop to 0, without any variation for
seemingly random periods of time. If you imagine a normal, noisy
looking waves, with large sections clipped out, you have a sense of
what's going on.
This seems to occur in datasets at random: some are extremely vulnerable to it, while others don't show this artifact at all.
All the best
~Thomas
This seems to occur in datasets at random: some are extremely vulnerable to it, while others don't show this artifact at all.
All the best
~Thomas