pan>To <span  title="" class="an ">&ensp;</span>analyze <span  title="" class="an ">&ensp;</span>whether <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span>tonic <span  title="" class="an ">&ensp;</span>inhibition <span  title="" class="an ">&ensp;</span>may <span  title="" class="an ">&ensp;</span>be <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span>result <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</s