<div dir="ltr">Hi Tarik,<div><br></div><div>Thanks for the input,</div><div>Looks the approach we are taking is good,</div><div>However, I haven't be able to epoch using two triggers, I need to select an epoch which is 0.5 sec before a trigger A, and 0.5 sec after a trigger D, is there any way to do this?,</div><div><br></div><div>thanks for your help,</div><div>best</div><div>Jose</div><div><div class="gmail_extra"><br><div class="gmail_quote">On 3 March 2017 at 21:25, Tarik S Bel-Bahar <span dir="ltr"><<a href="mailto:tarikbelbahar@gmail.com" target="_blank">tarikbelbahar@gmail.com</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="color:#333399">Hello Jose,</div><div class="gmail_default" style="color:#333399"><br></div><div class="gmail_default" style="color:#333399">Yes you should be able to re-epoch, then run ICA on just the epochs without the buffer time,</div><div class="gmail_default" style="color:#333399">and then re-apply the ICA results to the files with the buffer time, and go from there.</div><div class="gmail_default" style="color:#333399">You may have to insert a new trigger, but you should be able to just "select an epoch start/end time that does include the buffer times. First try it with one file from the gui, and use eegh to build a script for that.</div><div class="gmail_default" style="color:#333399"><br></div><div class="gmail_default" style="color:#333399">Overall, if your buffer time is under ~2 seconds, and has no large artifacts, it would be okay to include them in the ICA. In other words, your ICA results should look very similar with either method (with or without the buffer periods).</div><div class="gmail_default" style="color:#333399"><br></div><div class="gmail_default" style="color:#333399">Check Makoto's general recommendations for ICA just in case, if you haven't had a chance to.</div><div class="gmail_default" style="color:#333399"><br></div><div class="gmail_extra"><div class="gmail_quote"><div><div class="m_-6852098896220450177h5">On Fri, Mar 3, 2017 at 10:11 AM, José Luis <span dir="ltr"><<a href="mailto:joseluisulloafulgeri@gmail.com" target="_blank">joseluisulloafulgeri@gmail.co<wbr>m</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="m_-6852098896220450177h5"><div dir="ltr">hi,<div><br></div><div>I'm analysing EEG data and want to perform ERP and time-frequency analyses,</div><div>I'm doing the pre-processing with EEGlab,</div><div>I wanted to move fast so I epoch my data and then I proceed with the artefact rejection. I epoch my data taken into consideration that for time-frequency I need a buffer zone,</div><div>Now, I want to perform ICA but only in a selected time period of interest. I have several question here:<br></div><div>1) Can I do ICA in select periods of time within my epochs?</div><div>2) If not, I could try to re-epoch my dataset, perform ICA in the re-epoched (shorter) dataset, and then re-inject the weight of the ICA back to the original dataset), does that sound ok? I'm only interested in my selected time period of interest, and the rest of the signal I would use it because I need a buffer zone, and because long periods to compute power at low frequencies,</div><div>3) Can I epoch relative to two triggers, i.e. for a sequence of triggers: A, B, C, D, E I want to do from -0.5 relative to A until E,</div><div><br></div><div>Thanks in advance for your help,</div><div>Jose<span class="m_-6852098896220450177m_2888107400587589046m_-3716522886377146035HOEnZb"><font color="#888888"><br clear="all"><div><br></div>-- <br><div class="m_-6852098896220450177m_2888107400587589046m_-3716522886377146035m_3632797050585802954gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">José Luis ULLOA FULGERI, PhD<br><span><a href="tel:+32%20477%2042%2090%2007" value="+32477429007" target="_blank">+32477429007</a><br>+32<span>4</span>92646477</span><br><a href="https://sites.google.com/site/joseluisulloafulgeri/" target="_blank">https://sites.google.com/site/<wbr>joseluisulloafulgeri/</a><br><span style="border-collapse:separate;color:rgb(102,102,102);font-family:'Times New Roman';font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"><span style="font-family:tahoma,sans-serif"><span style="border-collapse:separate;color:rgb(102,102,102);font-family:'Times New Roman';font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"></span></span></span></span></span></div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_-6852098896220450177gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">José Luis ULLOA FULGERI, PhD<br><span><a href="tel:+32%20477%2042%2090%2007" value="+32477429007" target="_blank">+32477429007</a><br>+32<span>4</span>92646477</span><br><a href="https://sites.google.com/site/joseluisulloafulgeri/" target="_blank">https://sites.google.com/site/<wbr>joseluisulloafulgeri/</a><br><span style="border-collapse:separate;color:rgb(102,102,102);font-family:'Times New Roman';font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"><span style="font-family:tahoma,sans-serif"><span style="border-collapse:separate;color:rgb(102,102,102);font-family:'Times New Roman';font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><span style="font-family:arial;font-size:small"></span></span></span></span></span></div></div></div></div></div></div></div></div></div></div>
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