Some evidence links nausea induced by systemic AVP with changed dominant frequency of gastric electrical slow waves (assessed by electrogastrography [EGG]), either by creating tachygastria (Caras et al., 1997; Kim et al., 1997) or bradygastria (Kim et al., 1997; Lien et al., 2003). The gene discussed is AVP; the disease is Nausea.