Changing FDR value alters chosen p-value

[Thomas Kraynak]

Hi all,

If I threshold a SPM to a particular p-value, then put in a FDR value,
the value I put for p-value changes. Is this the new, corrected p-
value? What's the best way to think of this alteration?

Many thanks,

Thomas

[Xu Cui]

xjview first calculate the corresponding uncorrected p-Value of the FDR value; then update the view. The mapping between FDR value and p-Value depends on the image.

Xu

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New blog: 我的三次高考 http://www.alivelearn.net/?p=1389

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Xu Cui, Ph.D. 崔旭 博士
Department of Psychiatry and Behavioral Sciences
Stanford University
Blog: http://www.alivelearn.net

Profile: http://www.peaya.com/p/?cuixu
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[Thomas Kraynak]

Thank you for your response. I'm still a little confused about this.
So if I first chose an uncorrected p-value of .0005 and then chose
FDR .005, and the p-value window changed to 0.0017377, then that is
saying that 0.0017377 is the corresponding p-value, so I can imagine
uncorrected 0.0017377 and FDR .005 being analogous given this
particular SPM?

Thanks again,

Thomas

On Feb 15, 5:26 pm, Xu Cui <cuixiao...@gmail.com> wrote:
> xjview first calculate the corresponding uncorrected p-Value of the FDR
> value; then update the view. The mapping between FDR value and p-Value
> depends on the image.
>
> Xu
>
>
>
>
>
>
>
>
>
> On Wed, Feb 15, 2012 at 2:21 PM, Thomas Kraynak <tekray...@gmail.com> wrote:
> > Hi all,
>
> > If I threshold a SPM to a particular p-value, then put in a FDR value,
> > the value I put for p-value changes. Is this the new, corrected p-
> > value? What's the best way to think of this alteration?
>
> > Many thanks,
>
> > Thomas
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "xjView discuss group" group.
> > To post to this group, send email to xjview-dis...@googlegroups.com
> > .
> > To unsubscribe from this group, send email to
> > xjview-discuss-g...@googlegroups.com.
> > For more options, visit this group at
> >http://groups.google.com/group/xjview-discuss-group?hl=en.
>
> --

> New blog: 我的三次高考 <http://www.alivelearn.net/?p=1389>http://www.alivelearn.net/?p=1389

[Xu Cui]

>uncorrected 0.0017377 and FDR .005 being analogous

Yes.

Xu

2012/2/16 Thomas Kraynak <tekr...@gmail.com>