ROI signal change

Submitted by cat on

YAN Chao-Gan

Thu, 02/12/2015 - 17:58

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Hi Cat,

You can test if those time points are related to big head motion.

Best,

Chao-Gan

Dear Sir,
Could you clarify how I could test that? I know, from looking at the "MaxHeadMotion" output that this subject had below 1mm movement. 
Best Regards,
Cat
From: The R-fMRI Network <rfmri.org@gmail.com>
Reply-To: The R-fMRI Network <rfmri.org@gmail.com>
Date: Thursday, February 12, 2015 10:58 AM
To: "rfmri.org@rnet.co" <rfmri.org@rnet.co>
Subject: Re: [RFMRI] ROI signal change

[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by YAN Chao-Gan (YAN Chao-Gan)

Hi Cat,

You can test if those time points are related to big head motion.

Best,

Chao-Gan


Online version of this post: http://www.rfmri.org/comment/3518#comment-3518


YAN Chao-Gan

Thu, 02/12/2015 - 20:59

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Hi Cat,
You can check the FD files under RealignParameters/{Sub}, those have the head motion information.

Best,

Chao-Gan

On Thu, Feb 12, 2015 at 1:20 PM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by cat (cat)
Dear Sir,
Could you clarify how I could test that? I know, from looking at the "MaxHeadMotion" output that this subject had below 1mm movement. 
Best Regards,
Cat
From: The R-fMRI Network <rfmri.org@gmail.com>
Reply-To: The R-fMRI Network <rfmri.org@gmail.com>
Date: Thursday, February 12, 2015 10:58 AM
To: "rfmri.org@rnet.co" <rfmri.org@rnet.co>
Subject: Re: [RFMRI] ROI signal change

[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by YAN Chao-Gan (YAN Chao-Gan)

Hi Cat,

You can test if those time points are related to big head motion.

Best,

Chao-Gan


Online version of this post: http://www.rfmri.org/comment/3518#comment-3518


Many a little makes a mickle -- your kind contributions shall make our efforts not perish from the earth. Please help The R-fMRI Network at http://rfmri.org/#overlay=HelpUs
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Thank you very much, that is a great help.
Very Best Regards,
Cat
From: The R-fMRI Network <rfmri.org@gmail.com>
Reply-To: The R-fMRI Network <rfmri.org@gmail.com>
Date: Thursday, February 12, 2015 2:00 PM
To: "rfmri.org@rnet.co" <rfmri.org@rnet.co>
Subject: Re: [RFMRI] ROI signal change

[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by YAN Chao-Gan (YAN Chao-Gan)
Hi Cat,
You can check the FD files under RealignParameters/{Sub}, those have the head motion information.

Best,

Chao-Gan

On Thu, Feb 12, 2015 at 1:20 PM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by cat (cat)
Dear Sir,
Could you clarify how I could test that? I know, from looking at the "MaxHeadMotion" output that this subject had below 1mm movement. 
Best Regards,
Cat
From: The R-fMRI Network <rfmri.org@gmail.com>
Reply-To: The R-fMRI Network <rfmri.org@gmail.com>
Date: Thursday, February 12, 2015 10:58 AM
To: "rfmri.org@rnet.co" <rfmri.org@rnet.co>
Subject: Re: [RFMRI] ROI signal change

[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by YAN Chao-Gan (YAN Chao-Gan)

Hi Cat,

You can test if those time points are related to big head motion.

Best,

Chao-Gan


Online version of this post: http://www.rfmri.org/comment/3518#comment-3518


Many a little makes a mickle -- your kind contributions shall make our efforts not perish from the earth. Please help The R-fMRI Network at http://rfmri.org/#overlay=HelpUs
To manage subscriptions, please visit: http://rnet.co/mailman/listinfo/rfmri.org_rnet.co
Mail comment ID: http://www.rfmri.org/mailcomment/redirect/%3C31.1947.3518.1423763904.c8fb4f0f7b0646b99ccafaa9cab7fe78%40www.rfmri.org%3E

Online version of this post: http://www.rfmri.org/comment/3520#comment-3520


Dear Expert, I have calculated the resting state BOLD signal for several ROI's using your valuable toolbox Dpabi in order to assess functional connectivity patterns between these ROI's. I found out that the ROI_FCMaps for each person show my 120 time points (rows) for each ROI (columns). I was surprised that some of the time point signal changes were up to negative 12 or positive 6, although most were somewhere between negative 4 and positive 4. Are these outliers? Should I be concerned about the validity of the time point data? With Kind Regards, Cat