ACHE and Alzheimer disease: Third, all enrolled AD patients were under treatment by standard long-term Acetylcholinesterase inhibitors, which are expected to preserve alpha rhythms and reduce the difference between Nold and AD subjects in this respect (Brassen and Adler, 2003; Geldmacher, 2003; Onofrj et al., 2003; Babiloni et al., 2006d).