[FieldTrip] correlating EEG Data with behavioural data

[Schoffelen, J.M. (Jan Mathijs)]

Dear Tim,

Perhaps you can start here: https://www.fieldtriptoolbox.org/faq/stats/behavior_signalcorrelation/<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.fieldtriptoolbox.org%2Ffaq%2Fstats%2Fbehavior_signalcorrelation%2F&data=05%7C02%7Cfieldtrip%40science.ru.nl%7C561cbc99fd3f457c20d508dd6ba9aaa5%7C084578d9400d4a5aa7c7e76ca47af400%7C1%7C0%7C638785098627554346%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=YWSpHgtr7ZP4Kzm6My5o1%2F5IjVOcHW6Fr1XKp9RFo%2Fc%3D&reserved=0>

Best wishes,
Jan-Mathijs


On 23 Mar 2025, at 17:01, Tim Redepenning via fieldtrip <fieldtrip at science.ru.nl> wrote:

Dear list,
I have a variable 'X' with 29 × 1 values that tells me how strong the desired behavioural effect is.

And I have a matrix 'ITC_values' with 29 × 62 × 12 × 200 with EEG (ITC) values.

29 participants
62 channels
12 frequencies
200 time points

Could anyone suggest me an approach to find significant correlations between my EEG data and my behavioural data?

Addition:
I had the idea to calculate Mutual information
So, I calculated the Mutual information between
X and ITC_values(: , 1 , 1 , 1)
and
X  and ITC_ values (: , 1, 1, 2)
and so on.
In other words: I calculated the relationship between the hysteresis values and each timepoint at each frequency on each channel.
So, my result is a matrix with the size of 62 × 12 × 200 that holds all Mutual Information values.
Is this a valid approach?
Cause now I want to check the significance with a cluster permutation test. But that normally works only across subjects. But the MI values are already the result of aggregating participants.


Best wishes
Tim

Tim Redepenning

PhD Student | “Motor Control and Training” – Research Group
Faculty of Psychology and Sports Science
Bielefeld University | Cognitive Interaction Technology – Center of Excellence (CITEC)
33501 Bielefeld
Germany

Room: CITEC-1.411 | Phone: +49-(0)521-106-5129
E-Mail: tim.redepenning at uni-bielefeld.de<mailto:tim.redepenning at uni-bielefeld.de>

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