68</th>
<td>rh_subcort.aseg_ventraldc</td>
<td>0.0</td>
</tr>
</tbody>
</table></div>
<p>169 rows × 2 columns</p>
</div></div>
</div>
<p>First, let’s handle the cortical features:</p>
<div class="nbinput docutils container">
<div class="prompt highlight-none notranslate"><div class="highlight"><pre><span></span>[3]:
</pre></div>
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<div class="input_area highlight-ipython3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Initialize a surface reference that we will use</span>
<