Fifty-three healthy volunteers (23 men, 30 women), between 18 to 89 years of age (mean age 53.1 years, SD = 20.1) participated in this study. They were recruited via advertisements in the local newspaper and radio station and via flyers posted at the University of Konstanz, in residential homes for older adults and senior citizen centers. All participants gave written informed consent prior to the diagnostic interview, neuropsychological testing and MEG recordings and received 30 Euro as compensation. Exclusion criteria were dementia or probable dementia according to DSM-IV-TR47, psychiatric disorders, psychopharmacological medication, history of severe head injuries or neurological problems, left-handedness and metal objects in the body. The study was approved by the ethics committee of the University of Konstanz and the methods were carried out in accordance with the approved guidelines.
