TFCE-Plot, added CC BY attribution

[behinger]

Happy you found my graphic helpful, I added a CC-BY attribution according to creativecommons guidelines

[schoffelen]

Thanks, Benedikt! I indeed recently saw that @yingjoeyzhou Joey - who made this page - included this very instructive figure. Sorry for not properly giving credit before.

Now the only thing that needs to be done, is to make the actual implementation a bit faster, because it's very slow atm.