Abstract:
:Topographical analysis of cerebral electrical activity was performed in 44 patients with hepatic encephalopathy. These patients were classified in 5 groups according to clinical criteria. Eight healthy subjects were used as a control group. All were studied in an awake, eyes closed, condition and some [Control Group (CG), Group 0 (G0), Group 1 (G1) and Group 2 (G2)] also in an awake, eyes open, condition. The awake, eyes closed, maps showed marked differences in the power spectral density (PSD) of the different bands, when comparing normal subjects with patients with several degrees of hepatic encephalopathy. These differences were related to the degree of clinical involvement, mainly in the alpha and delta PSD bands. The combination of a decreased alpha PSD, increased delta PSD, and decreased mean dominant frequency (MDF) allowed a clear discrimination between the different clinical groups. The differences observed between awake, eyes closed, and awake, eyes open, conditions were especially helpful to discriminate between CG subjects and G0, G1 and G2 patients.
journal_name
Brain Topogrjournal_title
Brain topographyauthors
Sagalés T,Gimeno V,de la Calzada MD,Casellas F,Dolors Macià M,Villar Soriano Mdoi
10.1007/BF01140590subject
Has Abstractpub_date
1990-04-01 00:00:00pages
221-8issue
3eissn
0896-0267issn
1573-6792journal_volume
2pub_type
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