Coleman et al., 1982). EEG is also used to detect epileptiform activity and epileptic seizures or their absence (Flink et al., 2002; Niedermeyer, 1999a), or to monitor nonconvulsive status epilepticus in critically ill patients (Abend et al., 2010). By contrast, EEG has only rarely found a way into clinical use for diagnosis and evaluation of psychiatric disorders, although complementary treatments that use EEG are being widely offered in the form of neurofeedback training (Enriquez‐Geppert et al., 2017). Many patents have been filed for diagnostics or neurofeedback systems (patent category A61B5/0482), but only a single method has achieved FDA approval (theta/beta ratio for ADHD; see Arns et al., 2016).
