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Recovery of high speed memory scanning after transient global amnesia: A case report
Author(s) -
OKURA MASAO,
TOMOTAKE MASAHITO,
MORI KEIJIRO,
IKUTA TAKUMI
Publication year - 1996
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1996.tb00572.x
Subject(s) - transient global amnesia , amnesia , subclinical infection , memory disorder , task (project management) , audiology , psychology , medicine , anesthesia , cognition , cognitive disorder , psychiatry , cognitive impairment , management , economics
We described the case of a 59 year old female with transient global amnesia (TGA) who had been examined neuropsychologically using Sternberg's paradigm and a random number generation (RNG) task on the following day, 1 week and 4 weeks after a TGA episode. The slope value of the linear function, a measure of cognitive memory scanning speed, decreased with time and showed a marked decrease 1 week after TGA, suggesting that the stage of serial and exhaustive scanning recovered within 1 week. The zero‐intercept value, on the other hand, increased during 1 week but decreased 4 weeks later and was not related directly to recovery from TGA. The performance in RNG task improved 1 week later, but deteriorated 4 weeks after the episode. Such a change in RNG was in accordance with that of the zero‐intercept value, predicting a relationship. It is concluded that the subclinical memory deficit, detected with these tasks, persisted longer than clinical recovery from TGA.