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Biomedical subjects

J Szumska

Publications and source records attributed to J Szumska.

11 recordsLinked to original sources
PubMed1983

Cerebral hemispheric differences in visual perception of various types of verbal material.

Hemispheric differences in perception of various verbal material were sought in two groups of Ss: 10 normal adults (a control group) and 10 patients of the Neurosurgery Clinic with focal brain damage either to the left or right hemisphere. The stimuli were letters projected singly, in three-letter nonsense sequences or in three letter Polish words on a screen in the left or right visual half-field. The results obtained from the control groups indicate that the dominance of the left hemisphere is limited only to the meaningful verbal material. The results obtained from the patients support the first finding and show that this dominance can be cancelled by some left hemisphere damage without influence on the perception of meaningless material.

Adolescent↗
PubMed1979

[Not Available].

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History, Modern 1601-↗
PubMed1979

[Use of haemodilution in the treatment of cranio-cerebral injuries (author's transl)].

By decreasing blood viscosity and vascular resistance normovolemic haemodilution increases cerebral blood flow and improves microcirculation. This eliminates the symptoms of anoxia of cerebral tissue. The extent of disturbances of the blood brain barrier is decreased. The case presented in this paper illustrates the use of the above-mentioned properties of haemodilution and concerns a patient with chronic subdural haematoma. The patient's status in the pre-operative period was very poor. Craniotomy and avacuation of the haematoma did not result in a visible improvement of the patient's state. He did not regain consciousness and even lost spontaneous respiratory function. Haemodilution /Hct 29%/ was performed using Dextran 60 and 5% human albumin in the proportions 1 : 1. As a result, spontaneous respiration was restored and there was a gradual improvement in the patient's status. 29 days later it was possible to communicate with the patient. The authors are of the opinion that haemodilution could find a much application in neurosurgery than has been the case up to now.

Brain↗
PubMedDate not supplied

[Cerebral functional asymmetry in face perception by the patients with focal brain damage].

The results are reported of the study of face perception in a group of 18 healthy subjects and 10 patients with lesions in the right or left cerebral hemisphere. The task given to these subjects included identification of a face photograph exposed for 20 msec in the right or left field of vision. The index of perception coefficient was the number of errors made while addressing the material to the left or right cerebral hemisphere. The results of the experiment confirmed the hypothesis of the dominant role of the right hemisphere for face perception. The results suggest also that face perception disturbances occur without respect to the site of lesion in the right hemisphere.

Brain Injuries↗
PubMedDate not supplied

[The process of learning verbal material in patients with various damaged cerebral structures].

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 these difficulties were found to have increased immediately after the surgical intervention in patients with lesions in the left cerebral hemisphere. On the other hand, late after the operation they were particularly pronounced after lesions placed in the right thalamus. Disturbances of material recall after distraction were shown in both groups independently of the side of the lesion.

Adult↗