The temporal gradient of loss in most cases of organic amnesia is said to be steepest at its most recent premorbid period , .
For psychogenic amnesia the temporal gradient of retrograde autobiographical memory loss is said to be quite consistently flat .
The temporal gradient of loss in most cases of organic amnesia is said to be steepest at its most recent premorbid period , whereas for psychogenic amnesia the temporal gradient of retrograde autobiographical memory loss is said to be quite consistently flat .