Hi Jodi,
Personally i find the easiest way to do this is by pasting the time series into excel, use an average of the values at which you consider the person/animal to be at rest/baseline then use the formula bar to turn each value of the time series into a percentage change from this baseline measure.
I hope this helps,
Jo
________________________________________
From: FSL - FMRIB's Software Library [[log in to unmask]] On Behalf Of Jodi Gilman [[log in to unmask]]
Sent: 09 March 2011 16:13
To: [log in to unmask]
Subject: [FSL] percent signal change
Hello,
When I run featquery on a cope image from a block design study, I get time series data that looks like this:
12855.1
12788.5
12775.5
12696.3
12722.7
12678
12904.1
12788
12626.8
12779.7
12671.4
12874.4
13034.7
13095.4
etc.
How can I convert these numbers to percent signal change?
Thanks,
Jodi
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