n <span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>those <span  title="" class="an ">&ensp;</span>responsive <span  title="" class="an ">&ensp;</span>neurones <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HT</span><span  title="" class="an ">&ensp;</span>decreased <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HVA</span><span  title="" class="an ">&ensp;</span>current <span  title="" class="an ">&ensp;</span>by <spa