Transient global amnesia represents an episode of acute onset of transient global anterograde amnesia, with a variable degree of impairment of retrograde memory, which is not associated with any other major neurologic signs or symptoms. Amnestic states are well known to correlate with damage to components of the limbic system such as the hippocampi and other mesial temporal structures.
Goldenberg et al 1991; Tanabe et al 1991). The estimated incidence in persons over 50 years of age is 8.5 per 100,000 per year • Computerized tomography (CT). Using special X-ray equipment, your doctor obtains images from many different angles and joins them together to show cross-sectional images of the brain and skull. CT scans can reveal abnormalities in brain structure, including narrowed, overstretched or broken blood vessels and past strokes.