uc in ogen . ▁ ▁In ▁studying ▁their ▁effects ▁on ▁ac et yl ch oline ▁re cept ors , ▁H ess ▁ ▁found ▁that ▁both ▁dru gs ▁in hib ited ▁the ▁re ceptor ▁and ▁affected ▁its ▁equilibrium , ▁though ▁via ▁different ▁mechan isms . ▁ ▁His ▁find ings ▁were ▁published ▁in ▁his ▁ 1 9 8 2 ▁paper ▁“ C oca ine ▁and ▁Ph ency cl id ine ▁In hib ition ▁of ▁the ▁Ac et yl ch oline ▁Re ceptor : ▁Analysis ▁of ▁the ▁Mechan isms ▁of ▁Action ▁Based ▁on ▁Me asure ments ▁of ▁I on ▁Fl ux ▁in ▁the ▁Mill isecond - to - Min utes ▁Time ▁Region .” ▁ ▁He ▁continued ▁to ▁explore ▁different ▁techniques ▁for ▁studying ▁the ▁ac et yl ch oline ▁re ceptor ▁such ▁as ▁the ▁one ▁described ▁in ▁his ▁paper ▁“ Ac et yl ch oline ▁Re ceptor ▁( from ▁Elect roph orus ▁electric us ): ▁A ▁Com parison ▁of ▁Single - Channel ▁Current ▁Record ings ▁and ▁Chem ical ▁Kin etic ▁Me asure ments .”   ▁He ▁used ▁a ▁single - channel ▁measurement ▁technique ▁to ▁determine ▁the ▁curr ents ▁through ▁the ▁channels ▁of ▁the ▁ac et yl ch oline ▁re ceptor ▁and ▁the ▁lif et imes ▁of ▁the ▁re ceptor ▁states .   ▁He ▁compared ▁the ▁results ▁collected ▁using ▁this ▁technique ▁to ▁results ▁collected ▁using ▁an ▁established ▁technique ▁involving ▁chemical ▁kin etic ▁record ings . ▁ ▁He ▁also ▁expl ored ▁the ▁use ▁of ▁an ▁innov ative ▁fast ▁reaction ▁technique ▁in ▁his ▁ 1 9 8 7 ▁paper :