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Brain lateralization and severity of stuttering in children

100%
Szelag E., Garwarska-Kolek D., Herman A.
Acta Neurobiologiae Experimentalis
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1993
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vol. 53
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issue 1
263-267
EN
Cerebral lateralization in visual perception was investigated in 9 severe stuttering, 11 mild stuttering and 48 fluent speakers. The subjects were asked to identify words presented in the left or right visual field for 20 ms. Children responded by pointing to the exposed test word on a response card which contained four different words. Errors commited in the left and right visual fields were analyzed. The data showed a left hemisphere superiority in the processing of words in both the mild stutterers and the fluent speakers, but a right hemisphere advantage in the severe stutterers. The results suggest a close relationship between the severity of stuttering and functional brain organization.
2
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Transsexualism and sex-related differences in hemispheric asymmetry

100%
Herman A., Grabowska A., Dulko S.
Acta Neurobiologiae Experimentalis
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1993
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vol. 53
|
issue 1
269-274
EN
Sex differenes in human brain lateralization are documented by studies on normal subjects, patients with the unilateral brain damage, and individuals with atypical level of hormones. However, there is no agreement as to the specific role of gender in the development of hemispheric asymmetry. This experiment was designed to examine whether gender identity plays an important role in the formation of brain lateralization, as some recent data seem to suggest. A group of subjects showing gender dysphoria transsexuals and two groups of control male and female subjects were presented with verbal and visual-spatial tasks. Results show that neither biological sex nor gender identity are sufficient factors to determine the pattern of hemispheric asymmetry.
3
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Combined effect of stringent or relaxed response, temperature and rom function on the replication of pUC plasmids in Escherichia coli

100%
Herman A., Węgrzyn A., Węgrzyn G.
Acta Biochimica Polonica
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1994
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vol. 41
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issue 2
122-124
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