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In 70 patients with epilepsy and severe behavioural disturbances with EEG changes in the temporal regions, we performed EEG investigations of deep temporal structures, temporal cortex and scalp, using Talairach's stereotactic apparatus. Taking into account the recorded changes we performed 115 stereotactic lesions on the medial amygdala (both unilaterally(More)
CSF outflow resistance was studied in cats using the lumbar infusion tests. Different infusion rates were applied from 0.012 to 1.8 ml/min. ICP level obtained during infusions varied from 8.9 +/- 3.0 to 144.0 +/- 25.7 mmHg. The calculated resistance (R) values were within 75.2 +/- 14.4 to 255.6 +/- 71.2. mm Hg/ml/min. The relation between ICP and R are(More)
Investigations of somatosensory evoked potentials in patients with muscular dystonia meet with difficulties due to abnormal muscle tone and dyskinesia producing myogenic artifacts deforming potentials recorded after their evoking. For obtaining better conditions for recording of somatosensory evoked potentials single dose of DHB was used. Somatosensory(More)
In 39 patients with intracranial lesions the resorption resistance was measured using an own computerized infusion test. A high usefulness of this test was demonstrated in the diagnosis of hydrocephalus and for establishing indications to ventriculocardiac valve implantation. In patients after craniocerebral injuries a rise was observed of the resorption(More)
A diagnostic additional filling test is described which is used for the assessment of the mechanisms of volume-pressure compensation. In the test infusion is used of "physiological" sinusoidal relationship between the infused volume and time. The duration of the test is 10 minutes and it does not require pressure stabilization. On the basis of 23 clinical(More)
The authors discuss the morphology of records of spontaneous and stimulated bioelectric activity in an analysis of selected 15 EEG records using electric stimulation of deep temporal structures using relatively low parameters of stimulation (optimal: 2--3 V, 50 Hz, 1 msec, duration 5 sec). Attention is called also to the fact that seizure activity is absent(More)
Biophysical aspects and the method of the Computerized Infusion Test (CIT) developed in the Neurosurgical Clinic of the Medical Research Center, Polish Academy of Sciences, are presented. The CIT is a development of classical methods of estimating the cerebrospinal fluid outflow resistance. It is based on a clinically tested mathematical model of the(More)
The experiment was carried out on 19 cats with changed intracranial volume-pressure relations by means of an epidural balloon which was inflated to 1.0 ml volume over 60 minutes. The intracranial pressure, the resistance to cerebrospinal fluid resorption, the volume-pressure responses and visual evoked potentials were determined at balloon volumes of 0.3(More)
The results are described of a study of the process of verbal material learning and its recall after distraction in 20 patients with involuntary movements treated by thalamotomy, and in 20 epileptic patients treated by amygdalotomy and hippocampotomy. In both groups learning difficulties had been noted already before the operation. In postoperative tests(More)
Since 1982, 23 hydrocephalic children have been studied for compensatory mechanisms of the cerebrospinal fluid system. The authors describe the method and results of a computerized pressure-elastance resorption test (CPERT), a spinal steady-state infusion test, in hydrocephalic children. Computerized analysis of the P/V and AMP/P curve provides valuable(More)