Subjects
Two groups of participants were enrolled. The first group consisted of 56 healthy participants (28 female, mean age 48.89 ± 19.35 years) with scores higher than 26 points in the screening by the Montreal Cognitive Assessment (MoCA)-testThe Patient Health Questionnaire subsection 9 (PHQ-9, Ref.The data protection clearance and Institutional Review Board of the Ludwig-Maximilians-Universität München, Germany, approved the study (no. 094-10). The study was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All patients gave informed consent.