<div dir="ltr">Dear Vishal,<div><br></div><div>What do you see when you perform average reference? How many channels do you have by the way? Also, what types of cap are you using? If EGI, check if they were bridged by any chance...</div><div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Oct 17, 2016 at 3:08 PM, Vishal Vijayakumar <span dir="ltr"><<a href="mailto:vijay059@umn.edu" target="_blank">vijay059@umn.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000">Hello,</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000">Apologies if you've answered this question already, but I observe that data across my channels look highly correlated after applying ASR to the filtered EEG data. My project involves analyzing tonic thermal pain, so I apply ASR to 4 minute segments of the data. Because of the high correlation, my ICA sphering matrix is quite large in magnitude (minimum value of 1800) for many subjects. I also disable any channel-based rejection because I'd like to concatenate data across subjects for group ICA. My current problem persists even during single subject analysis.</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000">I'm not sure if I'm doing something wrong, and I'd appreciate any insight you can provide!</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000"><br></div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000">Thanks,</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000">Vishal</div></div>
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