Functional amnesia, also known as dissociative psychogenic or mnestic block syndrome, is a rare disorder which, although clinically heterogeneous, most often characterised by dense retrograde amnesia mainly affecting the episodic-autobiographical domain but with relative preservation of anterograde memory function, pattern dissimilar to that seen in other amnesic disorders. The pathogenesis fun...

A case of transient global amnesia was studied in detail. Of note was a temporally extensive, although quite patchy, retrograde amnesia during the event for information recallable at other times. While a consolidation block can explain the anterograde amnesia in transient global amnesia, the profound retrograde amnesia requires an additional block in the retrieval of old, established memories.

Despite the significant recovery of memory observed after suggestions for posthypnotic amnesia are canceled, there still remains an apparent deficit in total recall (after amnesia has been lifted) among subjects who show amnesia on initial testing. This effect, reported originally by Hilgard and Hommel in 1961, was confirmed in analyses of recall data from groups of 691 and 488 volunteer subjec...

Glossary Alcoholic blackout Amnesia without loss of consciousness, in which the intoxicated person retains the ability to perform certain ‘automatized’ behaviors, without any subsequent memory for the episode. Amnesia A special case of forgetting in which the memory loss is greater than would be expected under ordinary circumstances. Anterograde amnesia affects memory for events occurring after...

Malingering, as defined by DSM-III, involves "voluntary production and presentation of false or grossly exaggerated physical or psychological symptoms. The symptoms are produced in pursuit of a goal that is obviously recognizable with an understanding of the individual's circumstances rather than of his or her psychopathology." Whenever an individual is evaluated in forensic settings, psychiatr...

It has previously been shown that rats trained 5 hr after intracerebral injection of acetoxycycloheximide show a transient amnesia at 24 hr after training. We have tested the possibility that adrenergic stimulants might provide protection from the amnesia. Metaraminol, given either before or after training or before testing, prevents the drug-induced amnesia. D-Amphetamine, injected soon after ...

angiotensin-ii is a multifunctional hormone that regulates blood pressure, plasma volume, neuronal functions, electrolyte balance, thrust and various other vital mechanisms. it acts through its receptors at 1 and at 2 . the involvement of angiotensin-ii and its receptors in cognition is still ambiguous. therefore, the present study was designed to investigate the effect of angiotensin-ii (2 μg/...

background: ketamine increases blood pressure and heart rate. propofol is an anesthetic drug with rapid recovery, but it causes respiratory depression, low heart rate and low blood pressure. combination of ketamine and propofol provides sedation, analgesia, and rapid recovery with hemodynamic stability and minimal respiratory depression. there have been a few studies about the effect of differe...