Modification of memory systems: some neurobiological aspects

The findings of clinical and experimental studies conducted over the past 25 years provide extensive evidence that in both laboratory animals and man memory can be modified by treatments which affect the central nervous system. Patients with head injuries may suffer from retrograde amnesia, a loss of memory for experiences which occur just prior to the onset of the injury. Findings of laboratory studies using animal subjects indicate that retrograde amnesia can be produced by a wide variety of experimental treatments.