Biomedical subjects
L González Sanz
Publications and source records attributed to L González Sanz.
[Evaluation of hepatic encephalopathy using computerized electroencephalography].
Spectral EEG analysis techniques were used to evaluate the degree of hepatic encephalopathy in a group of 69 cirrhotic patients, as compared to the results obtained in a group of healthy controls. With respect to controls, the cirrhotics had stronger delta and theta bands, and a weaker alpha band, as well as a reaction of the alpha band to opening the eyes. The use of strength ratios between different bands of frequency increments the sensitivity and diagnostic reliability of this technique, particularly the delta/alpha and theta/alpha indices, and permits the detection of cases with subclinical encephalopathy, which is particularly useful for clinical follow-up and for the evaluation of different therapeutic regimens.
[Evaluation of hepatic encephalopathy using evoked potential technics].
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[Study of cognitive functions in autistic children by means of electrical brain mapping].
Brain electrical activity of 20 autistic children and 19 controls, age range 7-13 years, was recorded employing brain mapping technics, during different test conditions: closed eyes, open eyes, listening music, puzzle task, receptive language, expressive language, writing and reading. The maps let us to analyze the differentiation and topographic organization of brain electrical activity, and the changes induced by psychological tasks over the different brain areas. The autistics children show, versus controls, slowed brain electrical activity, less organization and topographic differentiation, and also poor reactivity to the different test conditions in relationship with the ethiological diversity of this syndrome.