“…In addition to catalepsy, catatonia comprised “hypertonia .. motor barrage and negativism, motor repetitions …, passive obedience, mannerism, and deficit in gestural expression, as well as vasomotor and trophic troubles.”48 The relationship between EL and catatonic psychosis was widely discussed 28, 41, 68, 69. A key distinguishing criterion, however, was that cognition was impaired in dementia praecox as it was, according to Hoch, in “benign stupors.”70 Cognition was generally claimed to be near‐normal in EL32, 53, 71, 72, 73 The ARNMD deemed the term “catatonia” misleading in EL 28. According to Economo, EL produced “lucid catatonic stupor (Ref 3,.…”