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Transient global amnesia (TGA) in an MEG study.
- Source :
-
Brain topography [Brain Topogr] 2001 Summer; Vol. 13 (4), pp. 269-74. - Publication Year :
- 2001
-
Abstract
- A patient who had experienced an attack of transient global amnesia (TGA) was examined using neurophysiological methods. Magnetoencephalography (MEG) was performed and the Wechsler Memory Scale-Revised (WMS-R) test was administered at 5 days and at more than a month after the TGA episode. MEG data on neuronal activity obtained while the patient was undertaking a working memory task and during rest were analyzed using the wavelet-crosscorrelation method, which reveals time-lag and information flow between related sites in the brain. The WMS-R memory scores showed dramatic improvement when the test was administered a month following the attack, although no significant changes were observed in EEG, MRI and SPECT data. The MEG study revealed that under a working memory load how the neuron works functionally and the information propagates assembly within the right hemisphere, and that these brain functions were not performed adequately shortly after the TGA attack.
- Subjects :
- Amnesia, Transient Global psychology
Brain diagnostic imaging
Female
Humans
Middle Aged
Neurophysiology methods
Time Factors
Tomography, Emission-Computed, Single-Photon
Wechsler Scales
Amnesia, Transient Global diagnosis
Amnesia, Transient Global physiopathology
Brain physiopathology
Magnetoencephalography
Subjects
Details
- Language :
- English
- ISSN :
- 0896-0267
- Volume :
- 13
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Brain topography
- Publication Type :
- Academic Journal
- Accession number :
- 11545155
- Full Text :
- https://doi.org/10.1023/a:1011176612377