="" class="an ">&ensp;</span>analyses <span  title="" class="an ">&ensp;</span>Thus <span  title="" class="an ">&ensp;</span>our <span  title="" class="an ">&ensp;</span>data <span  title="" class="an ">&ensp;</span>suggest <span  title="" class="an ">&ensp;</span>that <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>of <span  title="" class="an ">&ensp;</span>monoamine <sp