Slow waves in EEG activity are seen in:
Delirium: Generalized slowing waves on the EEG are seen. Except in delirium caused by benzodiazepine withdrawal and delirium tremens. For Depression, Schizophrenia and Mania there is no characteristic finding on the EEG.
Depression
Delirium
Schizophrenia
Mania
Neurotic, Stress Related and Somatoform Disorders