<div dir="ltr">Dear Ali,<div><br></div><div>> the brain sources are not independent in reality,<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">That may be true. In that case, ICA is extracting independent part of brain activity.</div><div class="gmail_extra"><br></div><div class="gmail_extra">However, at least in a standard psychological assumptions, when you are performing visual task, your auditory cortex is not directly engaged, therefore EEG from the visual cortex and the auditory cortex should be independent. Don't you agree?</div><div class="gmail_extra"><br></div><div class="gmail_extra">Makoto</div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 24, 2017 at 5:30 AM, ali zahedi <span dir="ltr"><<a href="mailto:ali.zahedi.bham@gmail.com" target="_blank">ali.zahedi.bham@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Hi all,<div><br></div><div>I have a question about one of the assumptions of the ICA on estimated sources; "the sources estimated by ICA are statistically independent". If we want to apply ICA to EEG data, does this assumption make sense for brain sources? the brain sources are not independent in reality, so how does ICA work for EEG data?</div><div><br></div><div>Thank you in advance,</div><div>Ali</div></div>
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