“We found (a) light-evoked and antidromically stimulated lateral … (5-20 microM) concentrations; (b) these actions of LSD … Mg++ and low in Ca++; (c) very low concentrations of chlorimipramine, a putative uptake blocker of …; (d) superfused 5-HT depresses lateral inhibition at all superthreshold concentrations (0.1-25 microM).”