consequently be seen as non-linearelectricalmeasurements (on human skin) [ 22 ]. Furthermore, these can be seen as part of Bioimpedance, since this field encompasses the passive electrical properties (memristor = fourth passive electrical circuit element) of organic tissues and corresponding recording techniques [ 23 ].
Materials and methods
Subject recruitment, approval
The measurements were conducted on 28 test subjects (16 male, 12 female, mean age 31 years, SD = 9.5 years; all gave informed consent for participation in the study) at the University of Oslo in