LEV</span><span  title="" class="an ">&ensp;</span>Keppra <span  title="" class="an ">&ensp;</span>in <span  title="" class="an ">&ensp;</span>the <span  title="" class="an ">&ensp;</span>same <span  title="" class="an ">&ensp;</span>assays <span  title="" class="an ">&ensp;</span>Combined <span  title="" class="an ">&ensp;</span>electrophysiologic <span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span>microfluorometric <span  title="" class="an ">&ensp;</span>recordings <span