<div dir="ltr">Hi all<div><br></div><div>Does anyone have a good sense on whether it would be valid to combine epochs from the same EEG session, but different tasks in order to maximise data for ICA decomposition?</div><div><br></div><div>I'm aware that feeding more data into the ICA gets better results, and the data from the different tasks will have similar artifacts to be removed (eye movement, muscle, line noise). However, the underlying neural activity will differ between the tasks (for example the Sternberg working memory task generates a large amount of posterior alpha, while the Go/Nogo task does not, but does generate a large N2 and P3 component).</div><div><br></div><div>Will the differences in the underlying neural activity between tasks negatively affect the results of the ICA if activity from different tasks is combined? And will it matter if the epochs from different tasks are of different lengths?</div><div><br></div><div>Kind regards,<br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Neil Bailey (PhD)</div><div>Monash Alfred Psychiatry Research Centre</div><div><a href="mailto:Neil.Bailey@Monash.edu" target="_blank">Neil.Bailey@Monash.edu</a></div><div>(03) 9076 5032</div></div></div></div></div>
</div></div>