A) NS-1738, 5-HI, Invermectin and Genistein represent the family of Type-I α7-PAMs. Schematic current traces illustrate the effects of Type-I α7-PAMs on α7 nAChRs: Type-I α7-PAMs increase the peak of α7 nAChR-mediated responses but do not alter the rate of desensitization of α7 nAChRs. B) PNU-120596, TQS, A867744, JNJ-1930942 represent the family of Type-II α7-PAMs. Schematic current traces illustrate the effects of Type-II α7-PAMs on α7 nAChRs: Type-II α7-PAMs increase the peak of α7 nAChR-mediated responses and considerably reduce the desensitization of α7 nAChRs.