I have another question in the mkanalysis. When I run mkanalysis is it possible to analyse only a part of my run?

I mean if my stimuli was 100s per run, can i tell mkanalysis to ignore the first 20s and the last 30s and analyse the 50 in the middle?

Sorry, yes you can use an A-B blocked paradigm. Run mkanalysis-sess -help to get more info

On 3/20/18 4:28 AM, Walid Yassin wrote:

Hello all,

I would like to pose my question again in case it got missed.

Thank you.

WY

On Mon, Mar 19, 2018 at 3:47 PM, Walid Yassin <walidyassin00@gmail.com> wrote:

Hi Doug,

Is it possible to run retinotopy-like analysis to reveal areas in the brain responsible for a certain phase of a presented stimuli?
Say, instead of presenting 0 - 360 degrees of rotating wedge per cycle, we would like to present arbitrary scale of 0 - 100 of a particular stimulus feature, that does not necessarily differ in their retinotopic locations.

We thought, if we pretend that scale-0 is equivalent to a wedge of 0 degree, and scale-50 is equivalent to a wedge of 180 degrees, and so on, we would be able to map the cortical area corresponding to each value of the scale.
However, the retinotopy protocol of freesurfer requires the input of a stimulus type “e.g. polar or eccen” and direction “e.g. pos or neg”, so our analysis won’t work as we intend.

Running Freesurfer v5.3.0

Thank you

Walid

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