yes that is what it means, I thought you were asking what was causing it. what were your degrees of freedom? <div><br></div><div>Cheers,</div><div>Michael<br><br><div class="gmail_quote">On Tue, Mar 1, 2011 at 8:29 PM, Anna McCarrey <span dir="ltr">&lt;<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1103%26L%3DSPM%26E%3Dquoted-printable%26P%3D975577%26B%3D--0016363ba6665eb3bc049d78b6fb%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;">Hi Michael thanks for your quick reponse. I was doing a simple condition &gt; baseline comparison. I only get &#39;Inf&#39; for the really large F values like &gt; 100. But the smaller F values report a z stat.<br>


<br>
I thought it might mean infinite ??!<br>
<div><div></div><div class="h5"><br>
-----Original Message-----<br>
From: <a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1103%26L%3DSPM%26E%3Dquoted-printable%26P%3D975577%26B%3D--0016363ba6665eb3bc049d78b6fb%26T%3Dtext%252Fhtml%3B%2520charset%3DUTF-8%26pending%3D" target="_parent" >[log in to unmask]</a></a> [mailto:<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1103%26L%3DSPM%26E%3Dquoted-printable%26P%3D975577%26B%3D--0016363ba6665eb3bc049d78b6fb%26T%3Dtext%252Fhtml%3B%2520charset%3DUTF-8%26pending%3D" target="_parent" >[log in to unmask]</a></a>] On Behalf Of Michael T Rubens<br>
Sent: Wednesday, 2 March 2011 2:58 PM<br>
To: Anna McCarrey<br>
Cc: <a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1103%26L%3DSPM%26E%3Dquoted-printable%26P%3D975577%26B%3D--0016363ba6665eb3bc049d78b6fb%26T%3Dtext%252Fhtml%3B%2520charset%3DUTF-8%26pending%3D" target="_parent" >[log in to unmask]</a></a><br>
Subject: Re: [SPM] z values<br>
<br>
that probably means that something is not right. What analysis were<br>
you doing? for instance, if you were doing a permutation test, it<br>
could be that you didn&#39;t perform enough iterations to resolve the<br>
significance.<br>
<br>
Cheers,<br>
Michael<br>
<br>
On Tue, Mar 1, 2011 at 7:50 PM, Anna McCarrey &lt;<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind1103%26L%3DSPM%26E%3Dquoted-printable%26P%3D975577%26B%3D--0016363ba6665eb3bc049d78b6fb%26T%3Dtext%252Fhtml%3B%2520charset%3DUTF-8%26pending%3D" target="_parent" >[log in to unmask]</a></a>&gt; wrote:<br>
&gt; Hi SPM experts,<br>
&gt;<br>
&gt; in whole brain analyses in fMRI, when the Z value is Inf, what does this mean and how do I report this?<br>
&gt;<br>
&gt; Many thanks in advance.<br>
&gt;<br>
&gt; Anna<br>
&gt;<br>
<br>
<br>
<br>
--<br>
Research Associate<br>
Gazzaley Lab<br>
Department of Neurology<br>
University of California, San Francisco<br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Research Associate<br>Gazzaley Lab<br>Department of Neurology<br>University of California, San Francisco<br>
</div>