>dat_beh</span><span class="op">[</span>,<span class="st">"age"</span><span class="op">]</span>,</span>
<span>                                 surf_data<span class="op">=</span><span class="va">SPRENG_CTv_smoothed</span>,</span>
<span>                                 nperm<span class="op">=</span><span class="fl">1000</span>, </span>
<span>                                 nthread<span class="op">=</span><span class="fl">4</span><span class="op">)</span> </span>
<span></span>
<span><span class="va">TFCEoutpu