[FieldTrip] Motor execution and imagination paradigms

[Vera Gramigna]

Thanks a lot.
Within each motor execution condition, the subject performed several times
the movements of indicated hands but the events are not time-locked.
During the motor imagination conditions, the subject imagined the movement
of indicated hands for 1 minute.
I'm looking for a way to differentiate the 5 conditions in terms of mu
rhythms.


Il giorno lun 8 mar 2021 alle ore 11:44 Schoffelen, J.M. (Jan Mathijs) <
jan.schoffelen at donders.ru.nl> ha scritto:

> Hi Vera,
>
> In your experimental setup there is no repetition of events, time-locked
> to which  it makes sense to compute TFRs. I would expect that your
> scientific question does not assume that there is a fine-grained modulation
> of the mu rhythm over time within the individual conditions that you
> sketched in your earlier e-mail. Therefore, you might consider integrate
> across as much time as possible, i.e. the 1 minute per condition of
> interest.
>
> Best wishes,
> Jan-Mathijs
>
>
> On 8 Mar 2021, at 10:50, Vera Gramigna <veragramigna at gmail.com> wrote:
>
> Thanks a lot for suggestions.
> The procedure to evaluate time-frequency response in
> https://www.fieldtriptoolbox.org/workshop/oslo2019/timefrequency/, is not
> indicated for a long duration acquisition?
> Thanks a lot
>
> Il giorno lun 8 mar 2021 alle ore 09:44 Schoffelen, J.M. (Jan Mathijs) <
> jan.schoffelen at donders.ru.nl> ha scritto:
>
>> Dear Vera,
>>
>> Perhaps you might find it helpful to start reading the following:
>>
>> https://www.fieldtriptoolbox.org/walkthrough/
>>
>> This is a basic explanation of experimental data analysis works in
>> general, focussing on how it’s done in Fieldtrip.
>>
>> Also, you could have a look at:
>>
>> https://www.fieldtriptoolbox.org/tutorial/coherence/
>>
>> Which explains how to extract a neural metric (in this case: coherence)
>> from an experimental set up that is similar to yours. Obviously, you’d need
>> to abstract away quite a bit from this tutorial but it might contain some
>> useful pointers.
>>
>> Good luck,
>>
>> Jan-Mathijs
>>
>>
>> On 6 Mar 2021, at 17:29, Vera Gramigna <veragramigna at gmail.com> wrote:
>>
>> Hello,
>> I have some EEG EPOC+/Flex acquisitions that are organized as follows:
>> - 1 min rest->1 min ME RH->1 min ME LH->1 min MI RH->1 min MI LH,
>> considering for ME motor execution and for MI motor imagination.
>> The total duration of acquisition is 5 minutes. During the condition of
>> motor execution and imagination the subject performed or imagined the
>> related movement for 1 minute.
>> I need to evaluate the differences in mu rhythm between the five
>> conditions.
>> Any suggestions on how to perform the analysis?
>> Thanks
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>>
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