Transient partial verbal amnesia.

Nishiyama, Kohei; Kurisaki, Hiroshi; Bandoh, Mitsuaki; Ishikawa, T; Sugishita, Morihiro

doi:10.1136/jnnp.56.11.1234

Cited by 8 publications

(5 citation statements)

References 5 publications

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“…Following this argument, TTD could be aligned together with other types of transient amnesia related to specific domains: transient verbal amnesia [29], transient loss of memory for people [30], transient semantic amnesia [31]and transient autobiographic amnesia [32]. All these transitory disorders could be related to a common acute and transitory mechanism able to affect different targets in the brain expressed as distinct clinical syndromes.…”

Section: Discussionmentioning

confidence: 99%

Transient Topographical Disorientation

et al. 2002

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Transient topographical disorientation (TTD) is a short-lasting inability to find one’s way in a familiar environment, while the patient remains conscious and is able to recall what happened. We report the study of 10 patients with episodes of TTD, studied on the days following the last episode. The episodes of TTD could be separated into two types: the patients either reported difficulties in spatial orientation with preserved abilities to recognize landmarks and objects, or the difficulties appeared with the recognition of landmarks. Tests exploring spatial orientation, as well as higher visuoperceptive capacities were altered in most of the patients and brain SPECT showed hypoperfusion of the right hemisphere in all patients, which could also be demonstrated 2 years later in some cases. Altogether, our findings suggest that TTD is frequently associated with a more persistent right hemisphere dysfunction of unknown cause. This chronic alteration could represent either a sequel of the acute episode or a preexisting right hemisphere deficit, which inclined the acute insult to be manifested as TTD.

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Section: Discussionmentioning

confidence: 99%

Transient Topographical Disorientation

et al. 2002

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“…Data from our patients indicate that FRA, especially in its functional form, has salient uniform features with minor differences in the characteristics of amnesia presentation, probably depending on the severity of the memory block. The same occurs for the so-called partial forms of TGA, reported with increasing frequency in recent years [27,33,56,72,74,75] and initially construed as psychogenic events. Transient short-lasting cases of FRA have also been described ( [60,77], and case 12 of the present sample) and two patients of the present sample (11 and 13) experienced a subsequent episode of transient topographical amnesia, considered a partial form of TGA.…”

Section: Discussionmentioning

confidence: 59%

When the Past is Lost: Focal Retrograde Amnesia. Focus on the“Functional” Form

Stracciari

Fonti

Guarino

2008

Behavioural Neurology

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We report the clinical findings and neuropsychological profiles of a sample of patients exhibiting a focal retrograde amnesia (FRA) seen consecutively during the period 1992-2007. The cohort comprised 13 patients, five males, with a mean age of 30 years (range 16-49). They were given a neurologic examination, psychiatric interview and formal neuropsychological examination (all but one) during the amnesic phase, underwent neuroimaging, and were followed up for six months to ten years. All presented with an acute amnesia characterized by an impaired recollection of memories predating the acute event, with spared or minimally and transiently affected anterograde memory, thus consistent with FRA. The events triggering FRA varied widely: mild to severe head injury, road accident without head injury, seizure, dissociative fugue, BDZ overdose, posttraumatic headache, syncope, migraine attack, acute distress. The neuropsychological hallmark of FRA was a selective or prominent impairment of autobiographical memory. The defect was often so severe as to cover most or all of the patients' lives and, in some cases, to erase the knowledge of their own identity. Conventional neuroimaging (brain CT and MRI) was unimpressive. Cerebral SPECT/PET disclosed unilateral frontal hypoperfusion in three (two left). All but one patient fully recovered, time of recovery ranging from three days to six months. FRA is a condition reflecting a block of memory function triggered by heterogeneous events, including both physical and psychic insults. Analogies shared with the more frequently encountered and better known condition of transient global amnesia suggests common pathogenetic mechanisms. A tentative nosographic classification of FRA is finally offered.

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“…The characteristics of Frances's amnesia differ from those reported in psychogenic memory loss in terms of age of onset duration (very brief) and the apparent sparing of personal semantic knowledge including recognition of friends and family (Stracciari, Fonti, & Guarino, 2008). We have found no evidence of temporal lobe seizure semiology, nor of features of Transient Epileptic Amnesia (such as confusional state in the mornings, persisting remote autobiographical episodic memory loss or lacunes, nor accelerated forgetting) (review in Elliott, Isaac, & Muhlert, 2014).…”

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confidence: 75%

“…Temporary disruption may affect procedural knowledge (Stracciari, Guarino, & Pazzaglia, 1997), semantic memory (Hodges, 1997); verbal learning and memory (Nishiyama, Kurisaki, Bandoh, Ishikawa, & Sugishita, 1993); autobiographical knowledge (Venneri & Caffarra, 1998); people (Kapur, Katifi, elZawawi, Sedgwick, & Barker, 1994) and topographical orientation (Gil-N eciga et al, 2002). We have recently learned of a case of focal Transient Retrograde Amnesia (TRAM) that appears to have spared the patient's anterograde memory as well as retrograde familiarity for friends and family.…”

mentioning

confidence: 98%