Amnesia for serious offenses has important legal implications, particularly regarding its relevance in the contexts of competency to stand trial and criminal responsibility. Forensic psychiatrists and other mental health professionals are often required to provide expert testimony regarding amnesia in defendants. However, the diagnosis of amnesia presents a challenge, as claims of memory impair...

introduction: the n-methyl-d-aspartate (nmda) receptors, which have been implicated in memory formation, could be noncompetitively blocked by ketamine. the present study examines the short term effect of ketamine on induction of anterograde and retrograde amnesia in male rats using morris water maze (mwm). methods: male n-mri rats were randomly divided into nine experimental groups. mwm studies...

The term amnesia encompasses many varied examples and causes of memory loss. In an edited text on amnesia, Whitty and Zangwill explore the subject in terms of cerebral disease, trauma, electroconvulsive therapy and psychogenesis. 1 It becomes obvious from the various causative factors involved in amnesia that such a multi-factorial problem requires an eclectic approach in answering. At present,...

Documentation of the reversibility of posthypnotic amnesia has been hampered by the correlation of hypnotizability with the initial level of response to amnesia suggestions. In a sample of 691 subjects, groups differing in hypnotic susceptibility could be matched for initial amnesia recall, thereby eliminating the ceiling effect. At virtually every point along the distribution of initial amnesi...

Memory disturbances frequently occur after brain damage, but can be associated with psychiatric illnesses as well. Amnesia--the most severe form of memory impairment--has several variants, including anterograde and retrograde amnesia, material-specific and modality-specific amnesia, and transient global amnesia. We searched databases to obtain an overview of amnesia research from the past 5 yea...

Functional amnesia for autobiographical memory is a rare but pathognomic sign of dissociative disorders. Amnesia for part of one's personal history is sometimes also seen in other functional disorders like depression and schizophrenia but autobiographical amnesia in these disorders is relatively rar . Phenomenologically the autobiographical memory loss, amnesia for events during the amnestic ep...

Amnesia typically results from trauma to the medial temporal regions that coordinate activation among the disparate areas of cortex that represent the information that make up autobiographical memories. We proposed that amnesia should also result from damage to these regions, particularly regions that subserve long-term visual memory [Rubin, D. C., & Greenberg, D. L. (1998). Visual memory-defic...

Amnesia for the perpetration of violent offences is an important issue in medico-legal proceedings. Previous studies of amnesia have mainly relied on selected groups of unconvicted offenders, which raises the question of how reliable the findings are. The purpose of this study was to examine the prevalence and phenomenological qualities of amnesia in violent offenders. In semi-structured interv...

We describe a form of amnesia, which we have called visual memory-deficit amnesia, that is caused by damage to areas of the visual system that store visual information. Because it is caused by a deficit in access to stored visual material and not by an impaired ability to encode or retrieve new material, it has the otherwise infrequent properties of a more severe retrograde than anterograde amn...

Memory disorders due to medial temporal lobe lesions are well documented, but studies on social cognition in patients with amnesia rare. This study examined cognitive functioning three adult amnesic patients. We report the neurocognitive and profiles of two developmental a patient adult-onset amnesia, all hypoxic events. All cases were compared their individual IQ-matched control groups. Both s...