Transient global amnesia associated with hydrocephalus

Giroud, M; Guard, O; Dumas, R

doi:10.1007/bf00718023

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…TGA episodes often occur while the patient is driving, and witnesses consistently report that this does not interfere in any obvious way with the control of the automobile. During TGA, patients are also able to complete a sporting event (Giroud, Guard, & Dumas, 1987;Posteraro, 1988), taxi an airplane for takeoff (Fisher, 1982), complete a bellringing musical performance , and cook a meal without any diminution ofskill. One surgeon was in the midst ofan operation when TGA occurred, and, despite his confused comments to his nurse, he finished the surgical incision "as well as he had closed up any gallbladder ... in the last dozen years.…”

Section: Procedural Memorymentioning

confidence: 99%

Transient global amnesia

Brown

1998

Psychonomic Bulletin & Review

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Transient global amnesia (TGA) is a memory dysfunction characterized by a sudden onset of dense anterograde amnesia (AA)that gradually resolves across several hours. TGAis typically accompanied by repeated questions (concerning present circumstances) with retrograde amnesia for events preceding the attack, and it usually strikes individuals in their late 50s and early 60s. The etiology of TGA remains unclear, although it probably reflects a temporary disruption of the blood supply to the temporallobe. The physical and psychological events preceding the attack are diverse, but they often include acute emotional and physical stressors. TGA appears to be benign, with low risk for recurrence or residual complications. While systematic memory research on TGApatients is rare, these individuals present a unique opportunity to study amnestic behaviors in otherwise normal individuals. A guide to conducting future research is provided. 401Over the last 4 decades, a considerable literature has accumulated concerning transient global amnesia (TGA). Originally described by Hague (1954; see Haas, 1983), the term TGA was coined by Fisher and Adams (1958) to describe a reversible, short-term (several hour) inability to store and/or retrieve new information most commonly observed in older adults (50-70 years old). Its onset is sudden, and its resolution is gradual. A period of retrograde amnesia (RA) is usually observed, the duration of which is highly variable (hours to years) across individuals and shrinks during the recovery period. TGA victims often ask the same question(s) repeatedly and are generally confused regarding time, place, and circumstances. Despite the inability to retain new information, general intellectual function (reading, writing, speaking, calculation) and selfidentity are preserved, and obvious neurological abnormalities are absent. Oddly, most TGA victims experience only one episode in a lifetime. TGA appears to be unassociated with any obvious physical or psychological disease process or residual disability, contrasting with other memory maladies, such as Alzheimer's dementia, Korsakoff's disease, drug addiction, or hysterical fugue states (Markowitsch, 1995).The primary purpose ofthe present review is to acquaint behavioral researchers with a common malady that is relatively unknown among psychology professionals. Despite a large literature on TGA, the phenomenon is poorly understood, and no consensus has emerged on its psychological or physiological cause. The present literature summary will hopefully allow cognitive, clinical, and healthThe author wishes to extend special thanks to Billie Stovall in the Interlibrary Loan Office of Southern Methodist University for her herculean efforts in procuring hundreds of articles from medical journals at other universities.

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Section: Procedural Memorymentioning

confidence: 99%

Transient global amnesia

Brown

1998

Psychonomic Bulletin & Review

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“…29 However, evidence against an epileptic etiology of TGA was provided by a case report in which an electroencephalogram was performed at the onset of the event. 30 Transient global amnesia associated with hydrocephalus has been attributed to either a disturbance of neurotransmission in the limbic system or a decreased blood flow in the central arteries, 31 while TGA due to hemorrhagic pituitary adenoma has been explained by compression affecting the neuronal pathway in the hippocampus related to the memory process. 32 Although head trauma is an exclusionary criteria for TGA, it has been postulated that mild head trauma may cause a temporary functional arrest of the memory mechanisms that does not correspond to actual morphological damage to anatomical structures.…”

Section: Discussionmentioning

confidence: 99%

Transient global amnesia following a transoceanic flight

Rashid¹,

Starer

2006

Psychiatry Clin Neurosci

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Transient global amnesia (TGA) is the abrupt onset of temporary anterograde amnesia without any focal neurological features. It is a benign condition and is completely reversible in most cases. However, the sudden occurrence of memory impairment can be especially alarming to an individual who has recently arrived in an unfamiliar setting. The cause of TGA remains unknown. Reported here is the unusual occurrence of TGA in a man following the completion of an international airplane flight. Possible etiologies of the episode are considered.

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Epidemiology of TGA (1): Possible Predisposing Factors

Larner

2022

Transient Global Amnesia

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Transient global amnesia associated with hydrocephalus

Abstract: The cases are reported of two men, aged 20 and 47 years, who suffered an episode of transient global amnesia. Both were subsequently found to have hydrocephalus.

Cited by 6 publications

References 14 publications

Transient global amnesia

Transient global amnesia

Transient global amnesia following a transoceanic flight

Epidemiology of TGA (1): Possible Predisposing Factors

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