That is one option. The other is to input it as a parametric modulator. It depends what you want to look and what you&#39;re hypothesis is. see some of grinband&#39;s findings on the subject.<br><br>cheers,<br>Michael<br><br>

<div class="gmail_quote">On Fri, Aug 12, 2011 at 6:54 AM, xiuqin jia <span dir="ltr">&lt;<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1108%26L%3DSPM%26E%3Dquoted-printable%26P%3D1907623%26B%3D--000e0ce0b4ea288abd04aa532163%26T%3Dtext%252Fhtml%3B%2520charset%3DUTF-8%26pending%3D" target="_parent" >[log in to unmask]</a></a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

Dear SPM Experts,<div><br></div><div><br></div><div>How can I operate in SPM to take the response times (RTs) as the regressor covariate? Dose it right to take the <b>RTs</b> of the trials as the <b>Durations</b>?</div><div>


<br></div><div>That is, in SPM, Data&amp;Design-&gt;Subject/Session-&gt;Condition-&gt;<b>Durations (here, inputing the RTs)</b>. </div><div><br></div><div>Any comments are really appreciated.</div><div><br></div><div>Thanks in advance.</div>


<div><br></div><div>Best Regards,</div><div><br></div><font color="#888888"><div>Xiuqin Jia</div><div><br></div><div><br></div>
</font></blockquote></div><br><br clear="all"><br>-- <br>Research Associate<br>Gazzaley Lab<br>Department of Neurology<br>University of California, San Francisco<br>