Amnesia can be caused by damage to areas of the brain that are vital for memory processing. Unlike a temporary episode of memory loss (transient global amnesia), amnestic syndrome can be permanent.
The clinical studies on transient global amnesia (TGA), an acute amnesic syndrome that is common in old people, have increased in the recent years.
近年来,有关短暂性全面遗忘症这一好发于中老年人群的急性遗忘综合征的临床研究逐渐增多。
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The prolonged time of postconcussional syndrome at each time period of posttraumatic amnesia is longer, and the symptoms are not ameliorated within half a year.