u have a T1-weighted NIfTI on your machine. If you do not, we can download one. We are downloading this to a temporary file since we don’t need it after the session is over:</p>
<div class="sourceCode" id="cb2"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="va">t1_file</span> <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/tempfile.html" class="external-link">tempfile</a></span><span class="op">(</span>fileext <span class="op">=</span> <span cla