About “Generalization across time”

1

Hi！I want to know whether Brainstorm software could do the step named “Generalization across time” in decoding, and get the figure like thisgeneralization%20across%20time

Reference:
Blanco-Elorrieta, E., Emmorey, K., & Pylkkänen, L. (2018). Language switching decomposed through MEG and evidence from bimodal bilinguals. Proceedings of the National Academy of Sciences , 115 (39), 9708-9713.

2

Hi Sijia,

Yes, now you can! Using the process1, under Decoding, you can use either SVM or max-correlation decoding. Make sure to group your trials in condition folders and to select "temporal generalization" as the decoding method.

For your information, we had a training about this recently, refer to the following slides: https://www.dropbox.com/s/za1qxu2z3z0wq2t/Montreal_bstdemo_2019.pptx?dl=0

Let me know if you need more help.

Cheers,
Martin

3

Hi Martin,

Thank you very much. Your suggestion is useful for us.

Now, I have another question. By using " Decoding > Classification with cross-validation ", I got the result like this figure.
image
I want to know whether the shading along the decoding accuracy indicates 95% confidence intervals or others?

Cheers,
Sijia

4

Hi Sijia,

This plots shows the mean and standard deviation of the decoding accuracy across all permutations of pairs of trials. So not the confidence interval but rather the standard deviation.

Martin

5

Thank you very much. Looking forward to see you in China in the future!