I ended up using the gamma function like you had mentioned.

I was just wondering if there is a better way of exporting the betas in Matlab? I am only able to see them when I go in each subject's .mat file. Is there a way to get all betas for all subjects and conditions?

Thank you!

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That multiplication results in HRF, and Homer already outputs HRF with the output name "dcAvg". Please check out the link below. You can also export HRF.

https://github.com/BUNPC/Homer3/wiki/Output-Files

Meryem

]]>Thank you very much, that makes sense. Can you just explain how to do this on Matlab for someone with very basic calculus background and little matlab skills?

*"**you need to multiple the series of beta coefficients by the basis functions to restore the shape of the HRF. Then you can measure the mean across a chosen time range of that HRF. Then you can look at the statistics of that mean across subjects*."

Also, if I choose to use the gamma function, do you recommend using the default parameters of ? Sorry I am not very familiar with this function.

I really appreciate your help!!

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I have a question about the beta coefficients shown in the output.

I used a GLM with the Gaussian basis function, and I now have 6 different beta coefficients, which I read that are one for each basis function. How do I choose between those beta? (see picture) They seem quite different from one another. How do I get to the final beta?

Thank you very much,

Bruna

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