It has anticonvulsant, anxiolytic, anorectic and amnestic effects in animal studies. Patients with severe PART typically exhibit mild cognitive impairment or an amnestic dementia. Propofol has both sedative and amnestic effects, but provides no analgesia. A third entity, encephalopathy (amnestic), denotes a gray zone between delirium and dementia. The amnestic attack has a sudden onset. The first is primarily memory loss (amnestic MCI). Validity of the SIMS Scales of Neurologic Impairment and Amnestic Disorder. The story starts with an amnestic Tenrei Gundam waking up.