Dear Mark,
Thanks, then my output (--fd file) seems too small. I'm planning to use mean FD for group matching and as a nuisance covariate. The group mean of mean FD is 0.0046 mm for patients and 0.0043 for healthy controls. Is this true for subjects, some of whose absolute displacement calculated from MCFLIRT are around 2-3 mm?
I used following command:
fsl_motion_outliers -i <raw fMRI volume> -o <output name> -s --fd
I confirmed that the input data is raw data, not preprocessed data. FSL version is 5.0.5, on OSX Mavericks. I appreciate your advice.
Best,
Jun
> 差出人: Mark Jenkinson <[log in to unmask]>
> 件名: Re: framewise displacement
> 日付: 2016年1月29日 18:37:34 JST
>
>
> Hi,
>
> Yes, it is mm.
>
> All the best,
> Mark
>
>> From: FSL - FMRIB's Software Library <[log in to unmask]> on behalf of Jun Miyata <[log in to unmask]>
>> Reply-To: FSL - FMRIB's Software Library <[log in to unmask]>
>> Date: Friday, 29 January 2016 09:31
>> To: "[log in to unmask]" <[log in to unmask]>
>> Subject: [FSL] framewise displacement
>>
>> Dear FSL experts,
>>
>> I calculated framewise displacement using fsl_motion_outliers. What is the unit of it? Is it mm just like Power et al, 2012?
>> Thanks in advance,
>>
>> Jun
>>
>
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