<div dir="ltr"><font color="#000000"><span style="font-size:14px">Hello eeglablist:</span></font><div><font color="#000000"><span style="font-size:14px"><br></span></font></div><div><font color="#000000"><span style="font-size:14px">We are planning a language ERP study exploring object versus subject relative clauses. The plan is to examine both word-by-word and whole sentence length processing, following the example set in this paper:</span></font><span style="font-size:14px"><font color="#000000"> (</font></span><font color="#000000"><span style="font-size:14px"><a href="http://kutaslab.ucsd.edu/people/kutas/pdfs/1995.JCN.376.pdf">http://kutaslab.ucsd.edu/people/kutas/pdfs/1995.JCN.376.pdf</a>). Stimuli are sentences presented one word at a time, followed by a comprehension probe sentence (subjects have up to 6000 msec to respond).</span></font></div><div><font color="#000000"><span style="font-size:14px"><br></span></font></div><div><font color="#000000"><span style="font-size:14px">The problem is, that paper provides only a gross description of how they epoched their EEG data. This has left us with a few questions:</span></font></div><div><font color="#000000"><span style="font-size:14px"><br></span></font></div><div><font color="#000000"><span style="font-size:14px">1. Is there a way to extract epochs from sentences with different lengths? Some trials have 12 word sentences, others 13 words etc. . .</span></font></div><div><font color="#000000"><span style="font-size:14px"><br></span></font></div><div><font color="#000000"><span style="font-size:14px">2. Since the subject may take up to 6000msec in their response, is it possible to have variable epoch endpoints based on when they responded?</span></font></div><div><font color="#000000"><span style="font-size:14px"><br></span></font></div><div><font color="#000000"><span style="font-size:14px">In general, our questions are about how to deal with variance in the stimulus/trial length when epoching. The above paper apparently handled such differences in test stimuli length, but does not describe how they did so. </span></font></div><div><div><font color="#000000"><br clear="all"></font><div>Any insight or suggestions would be appreciated.</div><div><br></div><div>Thank you for your time,</div>-- <br><div class="gmail_signature"><div dir="ltr">Isaiah Innis<br>Indiana University '13<br>EEG Technician, IUB IRF<br><br></div></div>
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