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Neurology India
Medknow Publications on behalf of the Neurological Society of India
ISSN: 0028-3886
EISSN: 0028-3886
Vol. 51, No. 2, 2003, pp. 235-236
Bioline Code: ni03071
Full paper language: English
Document type: Research Article
Document available free of charge

Neurology India, Vol. 51, No. 2, 2003, pp. 235-236

 en Relevance of computerized electroencephalographic topography (Brain Mapping) in ischemic stroke
L. Pinheiro, A. K. Roy, G. R. K. Sarma, A. Kumar


Background and Aims: Computerized electroencephalographic topography (CET) (brain mapping) is a non-invasive, spatially oriented procedure for depicting amplitude and frequency patterns by two-dimensional color-coded frequency and amplitude display of the electroencephalograph (EEG).
Material and Methods: We prospectively studied the relationship between CT scan lesions, conventional EEG and brain mapping in 40 patients with ischemic stroke within 1 week of onset. EEG and brain mapping was done within 24 hours of doing CT scan.
Results: There were 32 males and 8 females and the mean age was 56 years (range 27-75 years). CET/EEG was normal in 2 patients with capsular infarct. Brain mapping showed abnormalities (most commonly low-frequency high-amplitude changes) in 95% of patients, whereas EEG abnormalities were seen in only 40%. Brain mapping abnormalities were appropriate to the side of the CT scan lesion in 20 (52.63%) patients and were present bilaterally n 18 (47.37%) patients. Brain mapping abnormalities were ipsilateral to the side of the CT lesion when the lesion was < 2 cm in diameter and they were bi-hemispherical when the CT lesion was > 2 cm in diameter.
Conclusions: There was no correlation between motor deficits and brain map abnormalities.

Ischemic stroke, EEG, Brain mapping.

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